diff --git a/BookAStar/BookAStar.Droid/BookAStar.Droid.csproj b/BookAStar/BookAStar.Droid/BookAStar.Droid.csproj
index 52765a5e..cf995dc5 100644
--- a/BookAStar/BookAStar.Droid/BookAStar.Droid.csproj
+++ b/BookAStar/BookAStar.Droid/BookAStar.Droid.csproj
@@ -71,7 +71,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="FormsViewGroup, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Xamarin.Forms.2.3.2.127\lib\MonoAndroid10\FormsViewGroup.dll</HintPath>
+      <HintPath>..\..\packages\Xamarin.Forms.2.3.0.34-pre1\lib\MonoAndroid10\FormsViewGroup.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="GoogleMediaFramework">
@@ -202,7 +202,7 @@
       <HintPath>..\..\Components\xamarin.auth-1.2.3.1\lib\android\Xamarin.Auth.Android.dll</HintPath>
     </Reference>
     <Reference Include="Xamarin.Forms.Core, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Xamarin.Forms.2.3.2.127\lib\MonoAndroid10\Xamarin.Forms.Core.dll</HintPath>
+      <HintPath>..\..\packages\Xamarin.Forms.2.3.0.34-pre1\lib\MonoAndroid10\Xamarin.Forms.Core.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Xamarin.Forms.Labs, Version=1.0.1.0, Culture=neutral, processorArchitecture=MSIL">
@@ -218,15 +218,15 @@
       <HintPath>..\..\..\..\Visual Studio 2015\Projects\App2\packages\Xamarin.Forms.Maps.2.3.0.107\lib\MonoAndroid10\Xamarin.Forms.Maps.Android.dll</HintPath>
     </Reference>
     <Reference Include="Xamarin.Forms.Platform, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Xamarin.Forms.2.3.2.127\lib\MonoAndroid10\Xamarin.Forms.Platform.dll</HintPath>
+      <HintPath>..\..\packages\Xamarin.Forms.2.3.0.34-pre1\lib\MonoAndroid10\Xamarin.Forms.Platform.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Xamarin.Forms.Platform.Android, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Xamarin.Forms.2.3.2.127\lib\MonoAndroid10\Xamarin.Forms.Platform.Android.dll</HintPath>
+      <HintPath>..\..\packages\Xamarin.Forms.2.3.0.34-pre1\lib\MonoAndroid10\Xamarin.Forms.Platform.Android.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Xamarin.Forms.Xaml, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Xamarin.Forms.2.3.2.127\lib\MonoAndroid10\Xamarin.Forms.Xaml.dll</HintPath>
+      <HintPath>..\..\packages\Xamarin.Forms.2.3.0.34-pre1\lib\MonoAndroid10\Xamarin.Forms.Xaml.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Xamarin.GooglePlayServices.Ads, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
@@ -444,11 +444,11 @@
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\Xamarin.GooglePlayServices.Basement.29.0.0.2\build\Xamarin.GooglePlayServices.Basement.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Xamarin.GooglePlayServices.Basement.29.0.0.2\build\Xamarin.GooglePlayServices.Basement.targets'))" />
     <Error Condition="!Exists('..\..\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\build\Xamarin.Android.Support.Vector.Drawable.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\build\Xamarin.Android.Support.Vector.Drawable.targets'))" />
-    <Error Condition="!Exists('..\..\packages\Xamarin.Forms.2.3.2.127\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Xamarin.Forms.2.3.2.127\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets'))" />
+    <Error Condition="!Exists('..\..\packages\Xamarin.Forms.2.3.0.34-pre1\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Xamarin.Forms.2.3.0.34-pre1\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets'))" />
   </Target>
   <Import Project="..\..\packages\Xamarin.GooglePlayServices.Basement.29.0.0.2\build\Xamarin.GooglePlayServices.Basement.targets" Condition="Exists('..\..\packages\Xamarin.GooglePlayServices.Basement.29.0.0.2\build\Xamarin.GooglePlayServices.Basement.targets')" />
   <Import Project="..\..\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\build\Xamarin.Android.Support.Vector.Drawable.targets" Condition="Exists('..\..\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\build\Xamarin.Android.Support.Vector.Drawable.targets')" />
-  <Import Project="..\..\packages\Xamarin.Forms.2.3.2.127\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets" Condition="Exists('..\..\packages\Xamarin.Forms.2.3.2.127\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" />
+  <Import Project="..\..\packages\Xamarin.Forms.2.3.0.34-pre1\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets" Condition="Exists('..\..\packages\Xamarin.Forms.2.3.0.34-pre1\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
      Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/BookAStar/BookAStar.Droid/MainActivity.cs b/BookAStar/BookAStar.Droid/MainActivity.cs
index 2f049a1a..ebbab814 100644
--- a/BookAStar/BookAStar.Droid/MainActivity.cs
+++ b/BookAStar/BookAStar.Droid/MainActivity.cs
@@ -41,7 +41,7 @@ using XLabs.Caching;
 
 namespace BookAStar.Droid
 {
-    [Activity(Name="fr.pschneider.bas.MainActivity", Label = "BookAStar", Icon = "@drawable/icon", Theme = "@style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
+    [Activity(Name="fr.pschneider.bas.MainActivity", Label = "BookAStar", Theme = "@style/MainTheme", Icon = "@drawable/icon", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
     public class MainActivity :
         XFormsApplicationDroid,
         // was global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity,
@@ -51,23 +51,23 @@ namespace BookAStar.Droid
         {
             base.OnCreate(bundle);
 
-           // Window.RequestFeature(Android.Views.WindowFeatures.ActionBar);
-
             if (Build.VERSION.SdkInt >= BuildVersionCodes.Kitkat)
             {
                 Android.Webkit.WebView.SetWebContentsDebuggingEnabled(true);
             }
 
-            // no Resolver.IsSet
+            IXFormsApp<XFormsApplicationDroid> app =null;
             if (!Resolver.IsSet)
             {
                 this.SetIoc();
             }
             else
             {
-                var app = Resolver.Resolve<IXFormsApp>() as IXFormsApp<XFormsApplicationDroid>;
-                if (app != null) app.AppContext = this;
+                app = Resolver.Resolve<IXFormsApp>() as IXFormsApp<XFormsApplicationDroid>;
+                if (app != null)
+                    app.AppContext = this;
             }
+
             global::Xamarin.Forms.Forms.Init(this, bundle);
             global::Xamarin.FormsMaps.Init(this, bundle);
 
@@ -86,14 +86,14 @@ namespace BookAStar.Droid
             // Theme.ApplyStyle(Resource.Style.MainTheme, false);
 
             // XmlREader tb = Resources.GetLayout(Resource.Layout.Toolbar);
-            var tb = new Toolbar(this.BaseContext);
-
-            this.SetActionBar(tb);
+            // FIXME Why does Forms try to theme this toolbar?
+             var tb = new Toolbar(this.BaseContext);
+             this.SetActionBar(tb);
             
             LoadApplication(new BookAStar.App(this));
-            /*
             // TabLayoutResource = Resource.Layout.Tabbar;
             // ToolbarResource = Resource.Layout.Toolbar;
+            /*
             base.OnCreate(bundle);
             global::Xamarin.Forms.Forms.Init(this, bundle);
             global::Xamarin.FormsMaps.Init(this, bundle);
@@ -112,8 +112,8 @@ namespace BookAStar.Droid
 
             app.Init(this);
 
-            var documents = app.AppDataDirectory;
-            var pathToDatabase = Path.Combine(documents, "xforms.db");
+           var documents = app.AppDataDirectory;
+           var pathToDatabase = Path.Combine(documents, "xforms.db");
 
             resolverContainer.Register<IDevice>(t => AndroidDevice.CurrentDevice)
                 .Register<IDisplay>(t => t.Resolve<IDevice>().Display)
@@ -127,8 +127,6 @@ namespace BookAStar.Droid
                 .Register<ICacheProvider>(
                     t => new SQLiteSimpleCache(new SQLitePlatformAndroid(),
                         new SQLiteConnectionString(pathToDatabase, true), t.Resolve<IJsonSerializer>()));
-
-
             Resolver.SetResolver(resolverContainer.GetResolver());
         }
 
@@ -199,7 +197,7 @@ namespace BookAStar.Droid
             {
                 Task.Run(async () =>
                 {
-                    App.CurrentApp.ShowBookQuery(
+                    App.ShowBookQuery(
                        await DataManager.Current.BookQueries.Get(queryId));
                 });
             }
diff --git a/BookAStar/BookAStar.Droid/packages.config b/BookAStar/BookAStar.Droid/packages.config
index b25e9b63..44911c6e 100644
--- a/BookAStar/BookAStar.Droid/packages.config
+++ b/BookAStar/BookAStar.Droid/packages.config
@@ -5,7 +5,6 @@
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="monoandroid60" />
   <package id="Plugin.CurrentActivity" version="1.0.1" targetFramework="monoandroid70" />
   <package id="Plugin.Permissions" version="1.1.7" targetFramework="monoandroid70" />
-  <package id="Scorchio.NinjaCoder.Xamarin.Forms.Labs" version="2.0.0" targetFramework="monoandroid70" />
   <package id="SQLite.Net.Async-PCL" version="3.1.1" targetFramework="monoandroid70" />
   <package id="SQLite.Net.Core-PCL" version="3.1.1" targetFramework="monoandroid70" />
   <package id="SQLite.Net-PCL" version="3.1.1" targetFramework="monoandroid70" />
@@ -23,7 +22,7 @@
   <package id="Xamarin.Android.Support.v7.RecyclerView" version="23.3.0" targetFramework="monoandroid60" />
   <package id="Xamarin.Android.Support.Vector.Drawable" version="23.3.0" targetFramework="monoandroid60" />
   <package id="Xamarin.Controls.SignaturePad" version="1.4.0" targetFramework="monoandroid70" />
-  <package id="Xamarin.Forms" version="2.3.2.127" targetFramework="monoandroid70" />
+  <package id="Xamarin.Forms" version="2.3.0.34-pre1" targetFramework="monoandroid70" />
   <package id="Xamarin.Forms.Labs" version="1.0.1.0" targetFramework="monoandroid70" />
   <package id="Xamarin.GooglePlayServices.Ads" version="29.0.0.2" targetFramework="monoandroid41" />
   <package id="Xamarin.GooglePlayServices.Analytics" version="29.0.0.2" targetFramework="monoandroid41" />
diff --git a/BookAStar/BookAStar/App.xaml b/BookAStar/BookAStar/App.xaml
index 9b6d74a0..23898b58 100644
--- a/BookAStar/BookAStar/App.xaml
+++ b/BookAStar/BookAStar/App.xaml
@@ -40,14 +40,13 @@
         <Setter Property="FontAttributes" Value="Italic" />
         <Setter Property="HorizontalOptions" Value="Center" />
         <Setter Property="TextColor" Value="{StaticResource GroupingTextColor}" />
+        <Setter Property="VerticalOptions" Value="Start" />
       </Style>
       
       <Style x:Key="LabelStyle" TargetType="Label">
         <Setter Property="TextColor" Value="{StaticResource TextColor}" />
         <Setter Property="FontAttributes" Value="Bold" />
         <Setter Property="FontSize" Value="{StaticResource MediumFontSize}" />
-        <Setter Property="VerticalOptions" Value="Start" />
-        <Setter Property="HorizontalOptions" Value="Start" />
         <Setter Property="LineBreakMode" Value="WordWrap" />
       </Style>
 
diff --git a/BookAStar/BookAStar/App.xaml.cs b/BookAStar/BookAStar/App.xaml.cs
index 40882687..b8de6756 100644
--- a/BookAStar/BookAStar/App.xaml.cs
+++ b/BookAStar/BookAStar/App.xaml.cs
@@ -11,7 +11,9 @@ using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;
 using Xamarin.Forms;
+using XLabs.Forms.Controls;
 using XLabs.Forms.Mvvm;
+using XLabs.Forms.Pages;
 using XLabs.Forms.Services;
 using XLabs.Ioc;
 using XLabs.Platform.Mvvm;
@@ -30,16 +32,30 @@ namespace BookAStar
     {
         public static IPlatform PlatformSpecificInstance { get; set; }
         public static string AppName { get; set; }
+
+        public void ShowQueries()
+        {
+            masterDetail.Detail = bQueriesPage;
+            masterDetail.SendBackButtonPressed();
+        }
+        public void ShowAccounts()
+        {
+            masterDetail.Detail = accChooserPage;
+            masterDetail.SendBackButtonPressed();
+        }
+        // Exists in order to dispose of a static instance strongly typed
+        // TODO : replace all references to this field
+        // by Views resolution, and then, drop it
         public static App CurrentApp { get { return Current as App; } }
-        public DataManager DataManager { get; set; } = new DataManager();
+
         public static void Init()
         {
             var app = Resolver.Resolve<IXFormsApp>();
+            
             if (app == null)
             {
                 return;
             }
-            // navigation registration
 
             app.Closing += (o, e) => Debug.WriteLine("Application Closing");
             app.Error += (o, e) => Debug.WriteLine("Application Error");
@@ -48,42 +64,56 @@ namespace BookAStar
             app.Rotation += (o, e) => Debug.WriteLine("Application Rotated");
             app.Startup += (o, e) => Debug.WriteLine("Application Startup");
             app.Suspended += (o, e) => Debug.WriteLine("Application Suspended");
-            
+
         }
+        public void Configure(IXFormsApp app)
+        {
+            ViewFactory.EnableCache = true;
+            ViewFactory.Register<DashboardPage, DashboardViewModel>(
+                 resolver => new DashboardViewModel());
+            ViewFactory.Register<BookQueryPage, BookQueryViewModel>();
+            ViewFactory.Register<EditBillingLinePage, BillingLineViewModel>();
+            ViewFactory.Register<EditEstimatePage, EstimateViewModel>();
+        }
+
+
+        ExtendedMasterDetailPage masterDetail;
 
         public App(IPlatform instance)
         {
             PlatformSpecificInstance = instance;
             InitializeComponent();
             Init();
-            MainPage = GetMainPage();
+            BuildMainPage();
         }
+        BookQueriesPage bQueriesPage;
+        AccountChooserPage accChooserPage;
+        HomePage home;
 
-        public static Page GetMainPage()
+        private void BuildMainPage()
         {
-            ViewFactory.Register<SettingsPage,SettingsViewModel>();
-            ViewFactory.Register<BookQueryPage, BookQueryViewModel>(
-                resolver => new BookQueryViewModel ()
-                );
-           
-            var bQueriesPage = new BookQueriesPage
+            accChooserPage = new AccountChooserPage();
+
+            bQueriesPage = new BookQueriesPage
             {
                 BindingContext = DataManager.Current.BookQueries,
                 Title = "Demandes"
             };
 
-            //  var mainPage = new NavigationPage(bQueriesPage);
+            home = new HomePage() { Title = "Accueil" };
 
-            var mainPage = new XLabs.Forms.Pages.ExtendedMasterDetailPage() {
+            // var mainPage = new NavigationPage(bQueriesPage);
+            /*
+            masterDetail = new ExtendedMasterDetailPage() {
                 Title="MainPAge"
             };
 
-            mainPage.Master = bQueriesPage;
-            mainPage.Detail = new SettingsPage();
-            
-            Resolver.Resolve<IDependencyContainer>()
-                .Register<INavigationService>(t => new NavigationService(mainPage.Navigation));
+            masterDetail.Master = new DashboardPage {
+                Title = "Bookingstar",
+                BindingContext = new DashboardViewModel() };
+            masterDetail.Detail = new HomePage { Title = "Accueil" };
 
+            */
             ToolbarItem tiSetts = new ToolbarItem()
             {
                 Text = "Paramètres",
@@ -95,9 +125,11 @@ namespace BookAStar
                 Text = "Accueil",
                 Icon = "icon.png"
             };
-            mainPage.ToolbarItems.Add(tiHome);
-            mainPage.ToolbarItems.Add(tiSetts);
-            return mainPage;
+
+          
+
+
+
 
             /*     searchPage = new SearchPage
                  {
@@ -161,13 +193,33 @@ namespace BookAStar
                  };
                  MainPage = Navigation;
                  */
+            var mainTab = new ExtendedTabbedPage()
+            {
+                Title = "XLabs",
+                SwipeEnabled = true,
+                TintColor = Color.White,
+                BarTintColor = Color.Blue,
+                Badges = { "1", "2", "3" },
+                TabBarBackgroundImage = "visuel_sexion.png",
+                TabBarSelectedImage = "icon.png",
+            };
+
+            var navPage = new NavigationPage(bQueriesPage);
+            //var navPage = new NavigationPage(mainTab);
+            
+            navPage.ToolbarItems.Add(tiHome);
+            navPage.ToolbarItems.Add(tiSetts);
 
+            this.MainPage = navPage;
 
+            Resolver.Resolve<IDependencyContainer>()
+                .Register<INavigationService>(t => new NavigationService(navPage.Navigation))
+                ;
         }
 
-        internal void EditCommandLine(Page parentPage, CommandLine com)
+        internal void EditCommandLine(Page parentPage, BillingLine com)
         {
-            CommandLineEditorPage editCommandLine = new CommandLineEditorPage
+            EditBillingLinePage editCommandLine = new EditBillingLinePage
             {
                 Title = "Edition d'une ligne de facture",
                 BindingContext = com
@@ -181,26 +233,12 @@ namespace BookAStar
                 "gcm/register",
                 PlatformSpecificInstance.GetDeviceInfo());
         }
-
-        public void ShowBookQuery(BookQueryData data)
-        {
-            BookQueryPage bookQueryPage = new BookQueryPage
-            {
-                Title = "Demande de devis",
-                BindingContext = data
-            };
-           ShowPage(bookQueryPage);
-        }
-
-        public void EditEstimate(Estimate data)
+        
+        public static void ShowBookQuery (BookQueryData query)
         {
-            throw new NotImplementedException();
-            EditEstimatePage editEstimate = new EditEstimatePage
-            {
-                Title = "Création d'un devis"
-            };
-            editEstimate.Estimate = data;
-            // ShowPage(editEstimate);
+           var page = ViewFactory.CreatePage<BookQueryViewModel
+                , BookQueryPage>(null, new BookQueryViewModel(query));
+           App.Current.MainPage.Navigation.PushAsync(page as Page);
         }
 
         // TODO système de persistance de l'état de l'appli
@@ -212,12 +250,12 @@ namespace BookAStar
         /// <param name="parentPage">Parent Page</param>
         /// <param name="pageType">Type of page to show</param>
         /// <returns></returns>
-        private static async Task ShowPage(VisualElement parentPage, Type pageType)
+        public static async Task ShowPage(VisualElement parentPage, Type pageType)
         {
             // Get all the constructors of the page type.
             var constructors = pageType.GetTypeInfo().DeclaredConstructors;
 
-            foreach ( var page in
+            foreach (var page in
                     from constructor in constructors
                     where constructor.GetParameters().Length == 0
                     select (Page)constructor.Invoke(null))
diff --git a/BookAStar/BookAStar/BookAStar.csproj b/BookAStar/BookAStar/BookAStar.csproj
index b2216ffc..f75de879 100644
--- a/BookAStar/BookAStar/BookAStar.csproj
+++ b/BookAStar/BookAStar/BookAStar.csproj
@@ -42,16 +42,20 @@
     </Compile>
     <Compile Include="Constants.cs" />
     <Compile Include="Factories\ViewFactory.cs" />
-    <Compile Include="Helpers\AvatarImageSource.cs" />
     <Compile Include="Helpers\DataManager.cs" />
+    <Compile Include="Helpers\PageHelpers.cs" />
     <Compile Include="Helpers\PropertySupport.cs" />
     <Compile Include="Helpers\RemoteEntityRO.cs" />
     <Compile Include="Helpers\Settings.cs" />
+    <Compile Include="Helpers\UserHelpers.cs" />
     <Compile Include="Interfaces\IComponentContext.cs" />
     <Compile Include="Interfaces\IMDEditor.cs" />
     <Compile Include="Interfaces\IModelViewModel.cs" />
     <Compile Include="Interfaces\IViewFactory.cs" />
     <Compile Include="Model\ClientProviderInfo.cs" />
+    <Compile Include="Interfaces\IBookQueryData.cs" />
+    <Compile Include="Interfaces\IBillingLine.cs" />
+    <Compile Include="Interfaces\IEstimate.cs" />
     <Compile Include="Pages\BlogPage.cs" />
     <Compile Include="Pages\BookQueriesPage.xaml.cs">
       <DependentUpon>BookQueriesPage.xaml</DependentUpon>
@@ -59,8 +63,11 @@
     <Compile Include="Pages\BookQueryPage.xaml.cs">
       <DependentUpon>BookQueryPage.xaml</DependentUpon>
     </Compile>
-    <Compile Include="Pages\CommandLineEditorPage.xaml.cs">
-      <DependentUpon>CommandLineEditorPage.xaml</DependentUpon>
+    <Compile Include="Pages\EditBillingLinePage.xaml.cs">
+      <DependentUpon>EditBillingLinePage.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="Pages\DashboardPage.xaml.cs">
+      <DependentUpon>DashboardPage.xaml</DependentUpon>
     </Compile>
     <Compile Include="Pages\EventDetail.xaml.cs">
       <DependentUpon>EventDetail.xaml</DependentUpon>
@@ -72,7 +79,7 @@
     <Compile Include="Model\Blog\BlogTag.cs" />
     <Compile Include="Model\BookQueryData.cs" />
     <Compile Include="Model\Market\BaseProduct.cs" />
-    <Compile Include="Model\Workflow\CommandLine.cs" />
+    <Compile Include="Model\Workflow\BillingLine.cs" />
     <Compile Include="Model\Manager.cs" />
     <Compile Include="Model\Auth\MobileAppDeclaration.cs" />
     <Compile Include="Model\Auth\passwrecovery.cs" />
@@ -110,10 +117,16 @@
     <Compile Include="Pages\EditEstimatePage.xaml.cs">
       <DependentUpon>EditEstimatePage.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Pages\HomePage.xaml.cs">
+      <DependentUpon>HomePage.xaml</DependentUpon>
+    </Compile>
     <Compile Include="Pages\PinPage.cs" />
     <Compile Include="ViewModels\BookQueriesViewModel.cs" />
     <Compile Include="ViewModels\BookQueryViewModel.cs" />
-    <Compile Include="ViewModels\SettingsViewModel.cs" />
+    <Compile Include="ViewModels\BillingLineViewModel.cs" />
+    <Compile Include="ViewModels\DashboardViewModel.cs" />
+    <Compile Include="ViewModels\EstimateViewModel.cs" />
+    <Compile Include="ViewModels\UserLoginViewModel.cs" />
     <Compile Include="ViewModels\ViewModelBase.cs" />
     <Compile Include="Views\CommandLineEditor.xaml.cs">
       <DependentUpon>CommandLineEditor.xaml</DependentUpon>
@@ -123,8 +136,8 @@
     <Compile Include="Pages\SearchPage.xaml.cs">
       <DependentUpon>SearchPage.xaml</DependentUpon>
     </Compile>
-    <Compile Include="Pages\SettingsPage.xaml.cs">
-      <DependentUpon>SettingsPage.xaml</DependentUpon>
+    <Compile Include="Pages\AccountChooserPage.xaml.cs">
+      <DependentUpon>AccountChooserPage.xaml</DependentUpon>
     </Compile>
     <Compile Include="Model\Tag.cs" />
   </ItemGroup>
@@ -137,7 +150,9 @@
   <ItemGroup>
     <None Include="app.config" />
     <None Include="GettingStarted.Xamarin" />
-    <None Include="packages.config" />
+    <None Include="packages.config">
+      <SubType>Designer</SubType>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Pages\EventDetail.xaml">
@@ -148,7 +163,7 @@
       <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
       <SubType>Designer</SubType>
     </EmbeddedResource>
-    <EmbeddedResource Include="Pages\SettingsPage.xaml">
+    <EmbeddedResource Include="Pages\AccountChooserPage.xaml">
       <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
       <SubType>Designer</SubType>
     </EmbeddedResource>
@@ -186,19 +201,23 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="Xamarin.Forms.Core, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Xamarin.Forms.2.3.2.127\lib\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.Core.dll</HintPath>
+      <HintPath>..\..\packages\Xamarin.Forms.2.3.0.34-pre1\lib\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.Core.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Xamarin.Forms.Maps, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Xamarin.Forms.Maps.2.3.2.127\lib\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.Maps.dll</HintPath>
+      <HintPath>..\..\packages\Xamarin.Forms.Maps.2.3.0.34-pre1\lib\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.Maps.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Xamarin.Forms.Platform, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Xamarin.Forms.2.3.2.127\lib\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.Platform.dll</HintPath>
+      <HintPath>..\..\packages\Xamarin.Forms.2.3.0.34-pre1\lib\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.Platform.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Xamarin.Forms.Xaml, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Xamarin.Forms.2.3.2.127\lib\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.Xaml.dll</HintPath>
+      <HintPath>..\..\packages\Xamarin.Forms.2.3.0.34-pre1\lib\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.Xaml.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="XLabs.Caching, Version=2.2.0.38182, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\XLabs.Caching.2.2.0-pre05\lib\portable-net45+netcore45+wpa81+wp8+monoandroid+monotouch+xamarinios10+xamarinmac\XLabs.Caching.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="XLabs.Core, Version=2.2.0.38178, Culture=neutral, processorArchitecture=MSIL">
@@ -221,6 +240,10 @@
       <HintPath>..\..\packages\XLabs.Serialization.2.2.0-pre05\lib\portable-net45+netcore45+wpa81+wp8+monoandroid+monotouch+xamarinios10+xamarinmac\XLabs.Serialization.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="XLabs.Serialization.Json.NET, Version=2.2.0.38187, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\XLabs.Serialization.JSON.2.2.0-pre05\lib\portable-net45+netcore45+wpa81+wp8+monoandroid+monotouch+xamarinios10+xamarinmac\XLabs.Serialization.Json.NET.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Pages\BookQueryPage.xaml">
@@ -247,27 +270,44 @@
     </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>
-    <EmbeddedResource Include="icon-anon.png" />
+    <EmbeddedResource Include="Views\CommandLineEditor.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
+    </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>
-    <EmbeddedResource Include="Views\CommandLineEditor.xaml">
+    <EmbeddedResource Include="Pages\EditBillingLinePage.xaml">
+      <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
       <SubType>Designer</SubType>
+    </EmbeddedResource>
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="Pages\DashboardPage.xaml">
       <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
+      <SubType>Designer</SubType>
     </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>
-    <EmbeddedResource Include="Pages\CommandLineEditorPage.xaml">
+    <EmbeddedResource Include="Images\icon_add_user.png" />
+    <EmbeddedResource Include="Images\icon_anon_user.png" />
+    <EmbeddedResource Include="Images\icon_block_user.png" />
+    <EmbeddedResource Include="Images\icon_remove_user.png" />
+    <EmbeddedResource Include="Images\icon_user.png" />
+    <EmbeddedResource Include="Images\icon_user_settings.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="Pages\HomePage.xaml">
       <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
       <SubType>Designer</SubType>
     </EmbeddedResource>
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\Portable\$(TargetFrameworkVersion)\Microsoft.Portable.CSharp.targets" />
-  <Import Project="..\..\packages\Xamarin.Forms.2.3.2.127\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets" Condition="Exists('..\..\packages\Xamarin.Forms.2.3.2.127\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" />
+  <Import Project="..\..\packages\Xamarin.Forms.2.3.0.34-pre1\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets" Condition="Exists('..\..\packages\Xamarin.Forms.2.3.0.34-pre1\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
       <ErrorText>Ce projet fait référence à des packages NuGet qui sont manquants sur cet ordinateur. Utilisez l'option de restauration des packages NuGet pour les télécharger. Pour plus d'informations, consultez http://go.microsoft.com/fwlink/?LinkID=322105. Le fichier manquant est : {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\..\packages\Xamarin.Forms.2.3.2.127\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Xamarin.Forms.2.3.2.127\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets'))" />
+    <Error Condition="!Exists('..\..\packages\Xamarin.Forms.2.3.0.34-pre1\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Xamarin.Forms.2.3.0.34-pre1\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets'))" />
   </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/BookAStar/BookAStar/Constants.cs b/BookAStar/BookAStar/Constants.cs
index 078b40f3..c0f23f2c 100644
--- a/BookAStar/BookAStar/Constants.cs
+++ b/BookAStar/BookAStar/Constants.cs
@@ -21,31 +21,5 @@ namespace BookAStar
 
         #endregion
 
-        #region Colors & sizes
-        [Obsolete]
-        public static readonly Thickness PagePadding =
-            new Thickness(5, Device.OnPlatform(20, 20, 20), 5, 5);
-
-        [Obsolete]
-        public static readonly Thickness DefaultPadding =
-            new Thickness(5, Device.OnPlatform(20, 20, 20), 3, 3);
-
-        [Obsolete]
-        public static readonly Font TitleFont =
-            Font.SystemFontOfSize(Device.OnPlatform(50, 50, 50), FontAttributes.Bold);
-
-        [Obsolete]
-        public static readonly Color OddBackgroundColor =
-            Device.OnPlatform(Color.Aqua, Color.Aqua, Color.Aqua);
-
-        [Obsolete]
-        public static readonly Color ForegroundColor =
-            Device.OnPlatform(Color.White, Color.White, Color.White);
-
-        [Obsolete]
-        public static readonly Color BackgroundColor =
-            Device.OnPlatform(Color.Black, Color.White, Color.White);
-
-        #endregion
     }
 }
diff --git a/BookAStar/BookAStar/Helpers/AvatarImageSource.cs b/BookAStar/BookAStar/Helpers/AvatarImageSource.cs
deleted file mode 100644
index 6b511b87..00000000
--- a/BookAStar/BookAStar/Helpers/AvatarImageSource.cs
+++ /dev/null
@@ -1,30 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using Xamarin.Forms;
-using Xamarin.Forms.Xaml;
-
-namespace BookAStar
-{
-    [ContentProperty("Source")]
-    public class MyExtension : IMarkupExtension
-    {
-        public string Source { get; set; }
-
-        public object ProvideValue(IServiceProvider serviceProvider)
-        {
-            
-            // Do your translation lookup here, using whatever method you require
-            
-            if (Source != null)
-            {
-                if (Source.StartsWith("res://"))
-                    return ImageSource.FromResource(Source.Substring(6));
-                return ImageSource.FromUri(new Uri(Source));
-            }
-            return ImageSource.FromResource("BookAStar.icon-anon.png");
-        }
-    }
-}
diff --git a/BookAStar/BookAStar/Helpers/DataManager.cs b/BookAStar/BookAStar/Helpers/DataManager.cs
index 66a73427..14c7f9ca 100644
--- a/BookAStar/BookAStar/Helpers/DataManager.cs
+++ b/BookAStar/BookAStar/Helpers/DataManager.cs
@@ -17,12 +17,12 @@ namespace BookAStar.Helpers
         public RemoteEntity<Estimate, long> Estimates { get; set; }
         public RemoteEntity<Blog, long> Blogspot { get; set; }
         public LocalEntity<ClientProviderInfo,string> Contacts { get; set; }
-        
-        public static DataManager Current
+        protected static DataManager current = new DataManager();
+        public static DataManager Current 
         {
             get
             {
-                return App.CurrentApp.DataManager;
+                return current;
             }
         }
 
diff --git a/BookAStar/BookAStar/Helpers/MainSettings.cs b/BookAStar/BookAStar/Helpers/MainSettings.cs
index 974f33ee..63151925 100644
--- a/BookAStar/BookAStar/Helpers/MainSettings.cs
+++ b/BookAStar/BookAStar/Helpers/MainSettings.cs
@@ -31,9 +31,10 @@ namespace BookAStar
 
 		private const string userNameKey = "user_id";
 		private const string PushNotificationsKey = "pushNotifs";
+        private const string AllowGPSUsageKey = "allowGPSUsage";
         private const string UserListsKey = "userList";
         private const string GoogleRegIdKey = "googleRedId";
-
+        private const string AllowProBookingOnlyKey = "allowProBookingOnly";
         
 
         private static readonly string UserIdDefault = 
@@ -149,7 +150,7 @@ namespace BookAStar
                         App.CurrentApp.PostDeviceInfo();
                     }
                 }
-                // TODO else Unregister the device
+                // TODO else Unregister this device
             }
         }
 
@@ -175,13 +176,45 @@ namespace BookAStar
 					PushNotificationsDefault);
 			}
 			set { 
+                // TODO Stop Broadcast receiver
 				AppSettings.AddOrUpdateValue<bool> (
 					PushNotificationsKey,
 					value);
             }
 		}
 
-		public static void SetMusical (string key, double value)
+        public static bool AllowGPSUsage
+        {
+            get
+            {
+                return AppSettings.GetValueOrDefault<bool>(
+                    AllowGPSUsageKey,
+                    PushNotificationsDefault);
+            }
+            set
+            {
+                AppSettings.AddOrUpdateValue<bool>(
+                    AllowGPSUsageKey,
+                    value);
+            }
+        }
+        // TODO make it a server side user's parameter
+        public static bool AllowProBookingOnly
+        {
+            get
+            {
+                return AppSettings.GetValueOrDefault<bool>(
+                    AllowProBookingOnlyKey,
+                    PushNotificationsDefault);
+            }
+            set
+            {
+                AppSettings.AddOrUpdateValue<bool>(
+                    AllowProBookingOnlyKey,
+                    value);
+            }
+        }
+        public static void SetMusical (string key, double value)
 		{
 			AppSettings.AddOrUpdateValue <double> (MusicalKey + key, value);
 		}
diff --git a/BookAStar/BookAStar/Helpers/PageHelpers.cs b/BookAStar/BookAStar/Helpers/PageHelpers.cs
new file mode 100644
index 00000000..194dbac8
--- /dev/null
+++ b/BookAStar/BookAStar/Helpers/PageHelpers.cs
@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Xamarin.Forms;
+
+namespace BookAStar.Helpers
+{
+    public  static class PageHelpers
+    {
+        public static async Task<bool> Confirm(this Page page, string title, string procedure)
+        {
+            string yes = "Oui", no = "Non";
+            var answer = await page.DisplayAlert(title,
+               procedure, yes, no);
+            return answer;
+        }
+    }
+}
diff --git a/BookAStar/BookAStar/Helpers/UserHelpers.cs b/BookAStar/BookAStar/Helpers/UserHelpers.cs
new file mode 100644
index 00000000..f1d43366
--- /dev/null
+++ b/BookAStar/BookAStar/Helpers/UserHelpers.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Xamarin.Forms;
+
+namespace BookAStar.Helpers
+{
+    public static class UserHelpers
+    {
+        public static ImageSource Avatar(string avatarPath)
+        {
+            /*foreach (var r in App.Current.Resources)
+            {
+                Debug.WriteLine($"#R# {r.Key} : {r.GetType().Name}");
+            }*/
+            var result = avatarPath == null ?
+                ImageSource.FromResource(/* "BookAStar.icon_user.png" */ "BookAStar.Images.icon_user.png") :
+                avatarPath.StartsWith("res://") ?
+                 ImageSource.FromResource(avatarPath.Substring(6)) :
+                 ImageSource.FromUri(new Uri(avatarPath));
+            var test = ImageSource.FromResource("none.resource.png");
+            return result;
+        }
+    }
+}
diff --git a/BookAStar/BookAStar/Images/icon_add_user.png b/BookAStar/BookAStar/Images/icon_add_user.png
new file mode 100644
index 00000000..1c0a43cc
Binary files /dev/null and b/BookAStar/BookAStar/Images/icon_add_user.png differ
diff --git a/BookAStar/BookAStar/Images/icon_anon_user.png b/BookAStar/BookAStar/Images/icon_anon_user.png
new file mode 100644
index 00000000..43ce1300
Binary files /dev/null and b/BookAStar/BookAStar/Images/icon_anon_user.png differ
diff --git a/BookAStar/BookAStar/Images/icon_block_user.png b/BookAStar/BookAStar/Images/icon_block_user.png
new file mode 100644
index 00000000..50566f2b
Binary files /dev/null and b/BookAStar/BookAStar/Images/icon_block_user.png differ
diff --git a/BookAStar/BookAStar/Images/icon_remove_user.png b/BookAStar/BookAStar/Images/icon_remove_user.png
new file mode 100644
index 00000000..cb463901
Binary files /dev/null and b/BookAStar/BookAStar/Images/icon_remove_user.png differ
diff --git a/BookAStar/BookAStar/Images/icon_user.png b/BookAStar/BookAStar/Images/icon_user.png
new file mode 100644
index 00000000..c1ffbf1e
Binary files /dev/null and b/BookAStar/BookAStar/Images/icon_user.png differ
diff --git a/BookAStar/BookAStar/Images/icon_user_settings.png b/BookAStar/BookAStar/Images/icon_user_settings.png
new file mode 100644
index 00000000..3de9e7cf
Binary files /dev/null and b/BookAStar/BookAStar/Images/icon_user_settings.png differ
diff --git a/BookAStar/BookAStar/Interfaces/IBillingLine.cs b/BookAStar/BookAStar/Interfaces/IBillingLine.cs
new file mode 100644
index 00000000..929a7f67
--- /dev/null
+++ b/BookAStar/BookAStar/Interfaces/IBillingLine.cs
@@ -0,0 +1,12 @@
+using System;
+
+namespace BookAStar.Interfaces
+{
+    public interface IBillingLine
+    {
+        int Count { get; set; }
+        string Description { get; set; }
+        TimeSpan Duration { get; set; }
+        decimal UnitaryCost { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/BookAStar/BookAStar/Interfaces/IBookQueryData.cs b/BookAStar/BookAStar/Interfaces/IBookQueryData.cs
new file mode 100644
index 00000000..8728fa36
--- /dev/null
+++ b/BookAStar/BookAStar/Interfaces/IBookQueryData.cs
@@ -0,0 +1,15 @@
+using System;
+using BookAStar.Model.Social;
+using BookAStar.Model;
+
+namespace BookAStar.Interfaces
+{
+    public interface IBookQueryData
+    {
+        ClientProviderInfo Client { get; set; }
+        DateTime EventDate { get; set; }
+        long Id { get; set; }
+        Location Location { get; set; }
+        decimal? Previsionnal { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/BookAStar/BookAStar/Interfaces/IEstimate.cs b/BookAStar/BookAStar/Interfaces/IEstimate.cs
new file mode 100644
index 00000000..23726fdc
--- /dev/null
+++ b/BookAStar/BookAStar/Interfaces/IEstimate.cs
@@ -0,0 +1,20 @@
+using BookAStar.Model.Workflow;
+using System.Collections.Generic;
+
+namespace BookAStar.Model.Interfaces
+{
+    public interface IEstimate
+    {
+        List<string> AttachedFiles { get; set; }
+        List<string> AttachedGraphicList { get; }
+        List<BillingLine> Bill { get; set; }
+        string ClientId { get; set; }
+        long? CommandId { get; set; }
+        string CommandType { get; set; }
+        string Description { get; set; }
+        long Id { get; set; }
+        string OwnerId { get; set; }
+        int? Status { get; set; }
+        string Title { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/BookAStar/BookAStar/Model/Auth/User.cs b/BookAStar/BookAStar/Model/Auth/User.cs
index a22ef519..78de9113 100644
--- a/BookAStar/BookAStar/Model/Auth/User.cs
+++ b/BookAStar/BookAStar/Model/Auth/User.cs
@@ -1,11 +1,12 @@
-using System;
+using BookAStar.Helpers;
+using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
-
+using Xamarin.Forms;
 
 namespace BookAStar.Model.Auth.Account
 { 
@@ -79,6 +80,13 @@ namespace BookAStar.Model.Auth.Account
                 OnPropertyChanged("Avatar");
             }
         }
+        public ImageSource AvatarSource
+        {
+            get
+            {
+                return UserHelpers.Avatar(avatar);
+            }
+        }
         private Tokens yavscTokens;
         public Tokens YavscTokens
         {
diff --git a/BookAStar/BookAStar/Model/BookQueryData.cs b/BookAStar/BookAStar/Model/BookQueryData.cs
index 37d43a02..6f5ee97b 100644
--- a/BookAStar/BookAStar/Model/BookQueryData.cs
+++ b/BookAStar/BookAStar/Model/BookQueryData.cs
@@ -1,9 +1,10 @@
-using BookAStar.Model.Social;
+using BookAStar.Interfaces;
+using BookAStar.Model.Social;
 using System;
 
 namespace BookAStar.Model
 {
-    public class BookQueryData
+    public class BookQueryData : IBookQueryData
     {
         public ClientProviderInfo Client { get; set; }
         public Location Location { get; set; }
diff --git a/BookAStar/BookAStar/Model/ClientProviderInfo.cs b/BookAStar/BookAStar/Model/ClientProviderInfo.cs
index a684dc65..604beaae 100644
--- a/BookAStar/BookAStar/Model/ClientProviderInfo.cs
+++ b/BookAStar/BookAStar/Model/ClientProviderInfo.cs
@@ -1,4 +1,5 @@
-using BookAStar.Model.Social;
+using BookAStar.Helpers;
+using BookAStar.Model.Social;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -13,18 +14,18 @@ namespace BookAStar.Model
         public string UserName { get; set; }
         
         public string Avatar { get; set; }
-        // private string avatar;
-        //  public string Avatar { get { return avatar ?? "icon-anon.png"; }  set { avatar = value; } }
         public string UserId { get; set; }
         public int Rate { get; set; }
         public string EMail { get; set; }
         public string Phone { get; set; }
         public Location BillingAddress { get; set; }
+        // TODO Get User Professional status existence as a boolean
+        // And hack the avatar with
         public ImageSource AvatarOrNot
         {
             get
             {
-                return Avatar ?? ImageSource.FromResource("BookAStar.icon-anon.png");
+                return UserHelpers.Avatar(Avatar);
             }
         }
     }
diff --git a/BookAStar/BookAStar/Model/Workflow/CommandLine.cs b/BookAStar/BookAStar/Model/Workflow/BillingLine.cs
similarity index 64%
rename from BookAStar/BookAStar/Model/Workflow/CommandLine.cs
rename to BookAStar/BookAStar/Model/Workflow/BillingLine.cs
index 65ef4cdd..ee47feed 100644
--- a/BookAStar/BookAStar/Model/Workflow/CommandLine.cs
+++ b/BookAStar/BookAStar/Model/Workflow/BillingLine.cs
@@ -1,13 +1,14 @@
 
+using BookAStar.Interfaces;
 using System;
 
 namespace BookAStar.Model.Workflow
 {
-    public class CommandLine
+    public class BillingLine : IBillingLine
     {
         public string Description { get; set; }
         public TimeSpan Duration { get; set; }
-        public int Count { get; set; }
+        public int Count { get; set; } = 1;
         public decimal UnitaryCost { get; set; }
     }
 }
diff --git a/BookAStar/BookAStar/Model/Workflow/Estimate.cs b/BookAStar/BookAStar/Model/Workflow/Estimate.cs
index d9bb5f3b..58b8cffc 100644
--- a/BookAStar/BookAStar/Model/Workflow/Estimate.cs
+++ b/BookAStar/BookAStar/Model/Workflow/Estimate.cs
@@ -1,4 +1,5 @@
 using BookAStar.Helpers;
+using BookAStar.Model.Interfaces;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -7,7 +8,7 @@ using Xamarin.Forms;
 
 namespace BookAStar.Model.Workflow
 {
-    public partial class Estimate
+    public partial class Estimate : IEstimate
     {
         public long Id { get; set; }
         public long? CommandId { get; set; }
@@ -16,7 +17,7 @@ namespace BookAStar.Model.Workflow
         public string Description { get; set; }
         public int? Status { get; set; }
         public string Title { get; set; }
-        public List<CommandLine> Bill { get; set; }
+        public List<BillingLine> Bill { get; set; }
         /// <summary>
         /// List of attached graphic files
         /// to this estimate, as relative pathes to
diff --git a/BookAStar/BookAStar/Pages/AccountChooserPage.xaml b/BookAStar/BookAStar/Pages/AccountChooserPage.xaml
new file mode 100644
index 00000000..48608c3e
--- /dev/null
+++ b/BookAStar/BookAStar/Pages/AccountChooserPage.xaml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
+             xmlns:local="clr-namespace:BookAStar;assembly=BookAStar"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="BookAStar.Pages.AccountChooserPage"
+             Title="Paramètres Booking star" Style="{StaticResource PageStyle}"
+             xmlns:lc="clr-namespace:XLabs.Forms.Controls;assembly=XLabs.Forms"
+             xmlns:lb="clr-namespace:XLabs.Forms.Behaviors;assembly=XLabs.Forms">
+
+  <StackLayout>
+    <Label Text="Compte utilisateur" StyleClass="Header"/>
+
+    <ListView x:Name="AccountListView"
+              SeparatorVisibility="Default"
+              VerticalOptions="FillAndExpand"
+        >
+      <ListView.Header>
+        <StackLayout Orientation="Horizontal">
+
+          <Button x:Name="AddAccountBtn" Text="Connection, ou création d'un compte" />
+        </StackLayout>
+      </ListView.Header>
+
+      <ListView.ItemTemplate HeightRequest="60" VerticalOptions="StartAndExpand">
+        <DataTemplate>
+          <ViewCell>
+            <lc:GesturesContentView>
+              <Grid Padding="5"
+                        ColumnSpacing="10"
+                        RowSpacing="2" >
+                <Image Source="{Binding AvatarSource}" HeightRequest="80"
+                       x:Name="avatarImage"/>
+                <Label Grid.Column="0" Text="{Binding UserName}" >
+
+                </Label>
+              </Grid>
+              <lb:Gestures.Interests>
+                <lb:GestureCollection>
+                  <lb:GestureInterest GestureType="Swipe" Direction="Left" GestureCommand="{Binding DumpParam}" GestureParameter="{Binding UserName}"/>
+                </lb:GestureCollection>
+              </lb:Gestures.Interests>
+            </lc:GesturesContentView>
+          </ViewCell>
+        </DataTemplate>
+      </ListView.ItemTemplate>
+      <ListView.Footer>
+        <StackLayout></StackLayout>
+      </ListView.Footer>
+
+    </ListView>
+
+  </StackLayout>
+</ContentPage>
diff --git a/BookAStar/BookAStar/Pages/SettingsPage.xaml.cs b/BookAStar/BookAStar/Pages/AccountChooserPage.xaml.cs
similarity index 67%
rename from BookAStar/BookAStar/Pages/SettingsPage.xaml.cs
rename to BookAStar/BookAStar/Pages/AccountChooserPage.xaml.cs
index 1a47a79b..b41e7be6 100644
--- a/BookAStar/BookAStar/Pages/SettingsPage.xaml.cs
+++ b/BookAStar/BookAStar/Pages/AccountChooserPage.xaml.cs
@@ -6,17 +6,19 @@ using System.Windows.Input;
 using System.Collections.ObjectModel;
 using System.Collections.Generic;
 using System.ComponentModel;
+using BookAStar.Helpers;
+using XLabs.Forms.Behaviors;
+using System.Diagnostics;
+using XLabs.Forms.Controls;
 
-namespace BookAStar
+namespace BookAStar.Pages
 {
    
-    public partial class SettingsPage : ContentPage
+    public partial class AccountChooserPage : ContentPage
 	{
-        
-
         public ICommand RemoteSettingsRefreshCommand { get; private set; }
 
-        public SettingsPage ()
+        public AccountChooserPage ()
 		{
 			InitializeComponent ();
 
@@ -28,19 +30,20 @@ namespace BookAStar
 
             AddAccountBtn.Clicked += AddAccountBtn_Clicked;
 
-            RemoveAccountBouton.Clicked += RemoveAccountBouton_Clicked;
+             // avatarImage.
+            //RemoveAccountBouton.Clicked += RemoveAccountBouton_Clicked;
 
             AccountListView.ItemSelected += Accounts_ItemSelected;
-           
-            pushstatus.Toggled += Pushstatus_Toggled;
-            
-        }
-
-        protected void Pushstatus_Toggled(object sender, ToggledEventArgs e)
-        {
-            MainSettings.PushNotifications = pushstatus.IsToggled;
+            DumpParam = new RelayGesture((g, x) =>
+            {
+                if (g.GestureType == GestureType.Swipe && g.Direction == Directionality.Left)
+                {
+                    RemoveAccount();
+                }
+            }); 
         }
 
+        public RelayGesture DumpParam { get; set; }
         public ObservableCollection<User> Accounts { get; private set; }
         public Dictionary<string, double> Musical { get; private set; }
         public Dictionary<string, double> Environ { get; private set; }
@@ -49,31 +52,25 @@ namespace BookAStar
         {
             var user = e.SelectedItem as User;
             // should later invoke IdentificationChanged
+            // FIXME don't do it when it's not from the user action
             MainSettings.CurrentUser = user;
         }
 
-        private async void RemoveAccountBouton_Clicked(object sender, EventArgs e)
+        private async void RemoveAccount()
         {
             User user = AccountListView.SelectedItem as User;
-            var doIt = await Confirm("Suppression de l'identification",
+            var doIt = await this.Confirm("Suppression de l'identification",
                 $"Vous êtes sur le point de supprimer votre identification pour ce compte : {user.UserName}\nContinuer ?");
             if (doIt)
                 App.PlatformSpecificInstance.RevokeAccount(user.UserName);
         }
 
-        async Task<bool> Confirm(string title, string procedure)
-        {
-            string yes = "Oui", no = "Non";
-            var answer = await DisplayAlert(title,
-               procedure, yes, no);
-            return answer;
-        }
+        
 
         protected override void OnAppearing()
         {
             base.OnAppearing();
             AccountListView.SelectedItem = MainSettings.CurrentUser;
-            pushstatus.IsToggled = MainSettings.PushNotifications;
         }
 
         private void AddAccountBtn_Clicked(object sender, EventArgs e)
diff --git a/BookAStar/BookAStar/Pages/BookQueriesPage.xaml b/BookAStar/BookAStar/Pages/BookQueriesPage.xaml
index bda36a88..30388796 100644
--- a/BookAStar/BookAStar/Pages/BookQueriesPage.xaml
+++ b/BookAStar/BookAStar/Pages/BookQueriesPage.xaml
@@ -3,8 +3,7 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              xmlns:local="clr-namespace:BookAStar;assembly=BookAStar"
              x:Class="BookAStar.Pages.BookQueriesPage"
-             Padding="{x:Static local:Constants.PagePadding}"
-             BackgroundColor="{x:Static local:Constants.BackgroundColor}"
+             Style="{StaticResource PageStyle}"
              >
   <ContentPage.Resources>
     <ResourceDictionary>
@@ -17,7 +16,12 @@
         <Setter Property="LineBreakMode" Value="WordWrap" />
 
       </Style>
-
+          <Style TargetType="Label">
+            <Setter Property="Style" Value="{StaticResource ContentLabelStyle}" />
+          </Style>
+          <Style TargetType="Button">
+            <Setter Property="Style" Value="{StaticResource ButtonStyle}" />
+          </Style>
     </ResourceDictionary> 
   </ContentPage.Resources>
 
@@ -29,7 +33,7 @@
         <ViewCell>
           <ViewCell.View>
             <StackLayout Orientation="Horizontal" Padding="10,10,10,10" VerticalOptions="StartAndExpand">
-                <StackLayout Orientation="Vertical" BackgroundColor="{x:Static local:Constants.OddBackgroundColor}"
+                <StackLayout Orientation="Vertical" 
                              HeightRequest="80" VerticalOptions="StartAndExpand">
 
                   <StackLayout Orientation="Vertical" >
diff --git a/BookAStar/BookAStar/Pages/BookQueriesPage.xaml.cs b/BookAStar/BookAStar/Pages/BookQueriesPage.xaml.cs
index c5df63c8..55c6868c 100644
--- a/BookAStar/BookAStar/Pages/BookQueriesPage.xaml.cs
+++ b/BookAStar/BookAStar/Pages/BookQueriesPage.xaml.cs
@@ -8,6 +8,8 @@ using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Input;
 using Xamarin.Forms;
+using XLabs.Ioc;
+using XLabs.Platform.Services;
 
 namespace BookAStar.Pages
 {
@@ -42,7 +44,7 @@ namespace BookAStar.Pages
         private void OnViewDetail(object sender, ItemTappedEventArgs e)
         {
             BookQueryData data = e.Item as BookQueryData;
-            App.CurrentApp.ShowBookQuery(data);
+            Resolver.Resolve<INavigationService>().NavigateTo<BookQueryPage>(true,data);
         }
     }
 }
diff --git a/BookAStar/BookAStar/Pages/BookQueryPage.xaml b/BookAStar/BookAStar/Pages/BookQueryPage.xaml
index b5c538c9..89181fd6 100644
--- a/BookAStar/BookAStar/Pages/BookQueryPage.xaml
+++ b/BookAStar/BookAStar/Pages/BookQueryPage.xaml
@@ -4,8 +4,7 @@
              xmlns:local="clr-namespace:BookAStar;assembly=BookAStar"
              xmlns:maps="clr-namespace:Xamarin.Forms.Maps;assembly=Xamarin.Forms.Maps.dll"
              x:Class="BookAStar.Pages.BookQueryPage"
-             BackgroundColor="{x:Static local:Constants.BackgroundColor}"
-             Padding="{x:Static local:Constants.PagePadding}"
+             Style ="{StaticResource PageStyle}"
              >
   <ContentPage.Resources>
     <ResourceDictionary>
diff --git a/BookAStar/BookAStar/Pages/BookQueryPage.xaml.cs b/BookAStar/BookAStar/Pages/BookQueryPage.xaml.cs
index d7078eb4..c271dc91 100644
--- a/BookAStar/BookAStar/Pages/BookQueryPage.xaml.cs
+++ b/BookAStar/BookAStar/Pages/BookQueryPage.xaml.cs
@@ -10,6 +10,9 @@ namespace BookAStar.Pages
     using Model;
     using Model.Workflow;
     using System.Threading.Tasks;
+    using XLabs.Forms.Mvvm;
+    using XLabs.Ioc;
+    using XLabs.Platform.Services;
 
     public partial class BookQueryPage : ContentPage
     {
@@ -70,7 +73,7 @@ namespace BookAStar.Pages
                 Id = 0,
                 Description = "# **Hello Estimate!**"
             };
-            App.CurrentApp.EditEstimate(e);
+            Resolver.Resolve<INavigationService>().NavigateTo<EditEstimatePage>(true, e);
         }
         
     }
diff --git a/BookAStar/BookAStar/Pages/DashboardPage.xaml b/BookAStar/BookAStar/Pages/DashboardPage.xaml
new file mode 100644
index 00000000..7baa4393
--- /dev/null
+++ b/BookAStar/BookAStar/Pages/DashboardPage.xaml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="BookAStar.Pages.DashboardPage"
+             xmlns:lc="clr-namespace:XLabs.Forms.Controls;assembly=XLabs.Forms"
+             xmlns:lb="clr-namespace:XLabs.Forms.Behaviors;assembly=XLabs.Forms"
+             Style="{StaticResource PageStyle}">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+      <Style TargetType="Label">
+        <Setter Property="Style" Value="{StaticResource ContentLabelStyle}" />
+      </Style>
+      <Style TargetType="Button">
+        <Setter Property="Style" Value="{StaticResource ButtonStyle}" />
+      </Style>
+    </ResourceDictionary>
+  </ContentPage.Resources>
+  <ScrollView>
+  <StackLayout Orientation="Vertical" >
+    <lc:GesturesContentView>
+    <Frame>
+    <Label Text="Compte utilisateur" StyleClass="Header">
+    </Label>
+    <lb:Gestures.Interests>
+      <lb:GestureCollection>
+      <lb:GestureInterest GestureType="LongPress" GestureCommand="{Binding UserNameGesture}" GestureParameter="LongPress" />
+      </lb:GestureCollection>
+    </lb:Gestures.Interests>
+      <Image Source="{Binding Avatar}" Aspect="AspectFit" VisualElement.HeightRequest="{StaticResource BigUserAvatarSize}" />
+    </Frame>
+    </lc:GesturesContentView>
+    <Label Text="{Binding UserName}" Style="{StaticResource LabelPageHeadingStyle}" 
+           HorizontalTextAlignment="Center"
+           LineBreakMode="WordWrap" XAlign="Center" 
+           ></Label>
+    <Button Text="{Binding PerformerStatus}" Clicked="OnViewPerformerStatus" />
+    <Button Text="{Binding UserQueries}" Clicked="OnViewUserQueries" />
+    <StackLayout Orientation="Horizontal" >
+      <Label Text="Recevoir les notifications push" StyleClass="Header" />
+      <Switch IsToggled="{Binding ReceivePushNotifications, Mode=TwoWay}" 
+              HorizontalOptions="End" />
+    </StackLayout>
+    <StackLayout Orientation="Horizontal">
+      <Label Text="Utiliser ma position" StyleClass="Header" />
+      <Switch HorizontalOptions="End" IsToggled="{Binding AllowUseMyPosition, Mode=TwoWay}"/>
+    </StackLayout>
+    <StackLayout Orientation="Horizontal" VerticalOptions="Start">
+      <Label Text="Ne recevoir de demande de devis que de la part de professionnels uniquement" StyleClass="Header"/>
+      <Switch HorizontalOptions="End" IsToggled="{Binding AllowProBookingOnly, Mode=TwoWay}"/>
+    </StackLayout>
+  </StackLayout>
+  </ScrollView>
+</ContentPage>
\ No newline at end of file
diff --git a/BookAStar/BookAStar/Pages/DashboardPage.xaml.cs b/BookAStar/BookAStar/Pages/DashboardPage.xaml.cs
new file mode 100644
index 00000000..658e2384
--- /dev/null
+++ b/BookAStar/BookAStar/Pages/DashboardPage.xaml.cs
@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Xamarin.Forms;
+using XLabs.Forms.Behaviors;
+using XLabs.Forms.Controls;
+using XLabs.Forms.Mvvm;
+using XLabs.Ioc;
+using XLabs.Platform.Services;
+
+namespace BookAStar.Pages
+{
+    public partial class DashboardPage : ContentPage
+    {
+        public RelayGesture UserNameGesture { get; set; }
+
+        public DashboardPage()
+        {
+            InitializeComponent();
+            UserNameGesture = new RelayGesture((g, x) =>
+            {
+                if (g.GestureType == GestureType.LongPress)
+                {
+                    Resolver.Resolve<INavigationService>().NavigateTo<AccountChooserPage>(true);
+                }
+            });
+        }
+
+        public void OnViewPerformerStatus(object sender, EventArgs e)
+        {
+            App.CurrentApp.ShowAccounts();
+        }
+
+        public void OnViewUserQueries(object sender, EventArgs e)
+        {
+            App.CurrentApp.ShowQueries();
+
+        }
+
+
+    }
+}
diff --git a/BookAStar/BookAStar/Pages/CommandLineEditorPage.xaml b/BookAStar/BookAStar/Pages/EditBillingLinePage.xaml
similarity index 80%
rename from BookAStar/BookAStar/Pages/CommandLineEditorPage.xaml
rename to BookAStar/BookAStar/Pages/EditBillingLinePage.xaml
index 2b476be5..21ebbb68 100644
--- a/BookAStar/BookAStar/Pages/CommandLineEditorPage.xaml
+++ b/BookAStar/BookAStar/Pages/EditBillingLinePage.xaml
@@ -3,8 +3,18 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              xmlns:local="clr-namespace:BookAStar;assembly=BookAStar"
              xmlns:views="clr-namespace:BookAStar.Views;assembly=BookAStar"
-             x:Class="BookAStar.Pages.CommandLineEditorPage"
+             x:Class="BookAStar.Pages.EditBillingLinePage"
              Style="{StaticResource PageStyle}">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+      <Style TargetType="Label">
+        <Setter Property="Style" Value="{StaticResource ContentLabelStyle}" />
+      </Style>
+      <Style TargetType="Button">
+        <Setter Property="Style" Value="{StaticResource ButtonStyle}" />
+      </Style>
+    </ResourceDictionary>
+  </ContentPage.Resources>
   <StackLayout>
     <Label Text="Description de la ligne de facture" Style="{StaticResource InputLabelStyle}"></Label>
     <Editor VerticalOptions="FillAndExpand"></Editor>
diff --git a/BookAStar/BookAStar/Pages/CommandLineEditorPage.xaml.cs b/BookAStar/BookAStar/Pages/EditBillingLinePage.xaml.cs
similarity index 67%
rename from BookAStar/BookAStar/Pages/CommandLineEditorPage.xaml.cs
rename to BookAStar/BookAStar/Pages/EditBillingLinePage.xaml.cs
index 53ce3842..5c9e8915 100644
--- a/BookAStar/BookAStar/Pages/CommandLineEditorPage.xaml.cs
+++ b/BookAStar/BookAStar/Pages/EditBillingLinePage.xaml.cs
@@ -8,12 +8,11 @@ using Xamarin.Forms;
 
 namespace BookAStar.Pages
 {
-    public partial class CommandLineEditorPage : ContentPage
+    public partial class EditBillingLinePage : ContentPage
     {
-        public CommandLineEditorPage()
+        public EditBillingLinePage()
         {
             InitializeComponent();
-            
         }
     }
 }
diff --git a/BookAStar/BookAStar/Pages/EditEstimatePage.xaml b/BookAStar/BookAStar/Pages/EditEstimatePage.xaml
index f9f790cf..8de41415 100644
--- a/BookAStar/BookAStar/Pages/EditEstimatePage.xaml
+++ b/BookAStar/BookAStar/Pages/EditEstimatePage.xaml
@@ -3,7 +3,18 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              x:Class="BookAStar.Pages.EditEstimatePage"
              xmlns:views="clr-namespace:BookAStar.Views;assembly=BookAStar"
-             xmlns:local="clr-namespace:BookAStar;assembly=BookAStar">
+             xmlns:local="clr-namespace:BookAStar;assembly=BookAStar"
+             Style="{StaticResource PageStyle}">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+      <Style TargetType="Label">
+        <Setter Property="Style" Value="{StaticResource ContentLabelStyle}" />
+      </Style>
+      <Style TargetType="Button">
+        <Setter Property="Style" Value="{StaticResource ButtonStyle}" />
+      </Style>
+    </ResourceDictionary>
+  </ContentPage.Resources>
   <StackLayout Padding="10,10,10,10" BindingContext="{Binding .}">
     <StackLayout Orientation="Horizontal" Padding="10,10,10,10">
       <Label Text="{Binding Client.UserName}" LineBreakMode="WordWrap"></Label>
diff --git a/BookAStar/BookAStar/Pages/EditEstimatePage.xaml.cs b/BookAStar/BookAStar/Pages/EditEstimatePage.xaml.cs
index 48449d0a..00ea16bc 100644
--- a/BookAStar/BookAStar/Pages/EditEstimatePage.xaml.cs
+++ b/BookAStar/BookAStar/Pages/EditEstimatePage.xaml.cs
@@ -51,7 +51,7 @@ namespace BookAStar.Pages
         }
         protected void OnNewCommanLine(object sender, EventArgs e)
         {
-            var com = new CommandLine();
+            var com = new BillingLine();
             App.CurrentApp.EditCommandLine(this,com);
         }
        
diff --git a/BookAStar/BookAStar/Pages/EventDetail.xaml b/BookAStar/BookAStar/Pages/EventDetail.xaml
index 030d6fae..edcda6cf 100644
--- a/BookAStar/BookAStar/Pages/EventDetail.xaml
+++ b/BookAStar/BookAStar/Pages/EventDetail.xaml
@@ -2,7 +2,17 @@
 <ContentPage xmlns="http://xamarin.com/schemas/2014/forms" 
 xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
 xmlns:local="clr-namespace:BookAStar;Assembly:BookAStar"
- x:Class="BookAStar.Pages.EventDetail">
+ x:Class="BookAStar.Pages.EventDetail" Style="{StaticResource PageStyle}">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+      <Style TargetType="Label">
+        <Setter Property="Style" Value="{StaticResource ContentLabelStyle}" />
+      </Style>
+      <Style TargetType="Button">
+        <Setter Property="Style" Value="{StaticResource ButtonStyle}" />
+      </Style>
+    </ResourceDictionary>
+  </ContentPage.Resources>
 	<ContentPage.Content>
 	<ScrollView>
 	<StackLayout>
diff --git a/BookAStar/BookAStar/Pages/HomePage.xaml b/BookAStar/BookAStar/Pages/HomePage.xaml
new file mode 100644
index 00000000..0e0badb7
--- /dev/null
+++ b/BookAStar/BookAStar/Pages/HomePage.xaml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="BookAStar.Pages.HomePage"
+             Style="{StaticResource PageStyle}">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+      <Style TargetType="Label">
+        <Setter Property="Style" Value="{StaticResource ContentLabelStyle}" />
+      </Style>
+      <Style TargetType="Button">
+        <Setter Property="Style" Value="{StaticResource ButtonStyle}" />
+      </Style>
+    </ResourceDictionary>
+  </ContentPage.Resources>
+  <Label Text="Blah" VerticalOptions="Center" HorizontalOptions="Center" />
+</ContentPage>
\ No newline at end of file
diff --git a/BookAStar/BookAStar/Pages/HomePage.xaml.cs b/BookAStar/BookAStar/Pages/HomePage.xaml.cs
new file mode 100644
index 00000000..d55d3c16
--- /dev/null
+++ b/BookAStar/BookAStar/Pages/HomePage.xaml.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Xamarin.Forms;
+
+namespace BookAStar.Pages
+{
+    public partial class HomePage : ContentPage
+    {
+        public HomePage()
+        {
+            InitializeComponent();
+        }
+    }
+}
diff --git a/BookAStar/BookAStar/Pages/SearchPage.xaml b/BookAStar/BookAStar/Pages/SearchPage.xaml
index 7a9cfccb..3ca1d71e 100644
--- a/BookAStar/BookAStar/Pages/SearchPage.xaml
+++ b/BookAStar/BookAStar/Pages/SearchPage.xaml
@@ -3,7 +3,17 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              xmlns:local="clr-namespace:BookAStar;Assembly:BookAStar"
              x:Class="BookAStar.SearchPage" Title="Page de recherche"
-             Padding="10,40,10,10" >
+             Style="{StaticResource PageStyle}">
+  <ContentPage.Resources>
+    <ResourceDictionary>
+      <Style TargetType="Label">
+        <Setter Property="Style" Value="{StaticResource ContentLabelStyle}" />
+      </Style>
+      <Style TargetType="Button">
+        <Setter Property="Style" Value="{StaticResource ButtonStyle}" />
+      </Style>
+    </ResourceDictionary>
+  </ContentPage.Resources>
 	<ContentPage.Content>
 	<StackLayout>
 
diff --git a/BookAStar/BookAStar/Pages/SettingsPage.xaml b/BookAStar/BookAStar/Pages/SettingsPage.xaml
deleted file mode 100644
index 1489e944..00000000
--- a/BookAStar/BookAStar/Pages/SettingsPage.xaml
+++ /dev/null
@@ -1,63 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
-             xmlns:local="clr-namespace:BookAStar;assembly=BookAStar"
-xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-x:Class="BookAStar.SettingsPage"
-Title="Paramètres Booking star"
-             Style="{StaticResource PageStyle}">
-
-  <StackLayout>
-    <Label Text="Compte utilisateur" StyleClass="Header"/>
-
-    <ListView x:Name="AccountListView"
-              SeparatorVisibility="Default"
-              VerticalOptions="FillAndExpand"
-        >
-      <ListView.Header>
-        <StackLayout Orientation="Horizontal">
-          <Button x:Name="RemoveAccountBouton"
-          Text="Supprimer cette identité" />
-          <Button x:Name="AddAccountBtn" Text="s'inscrire ou se connecter avec un nouveau compte" />
-
-        </StackLayout>
-      </ListView.Header>
-
-      <ListView.ItemTemplate HeightRequest="60" VerticalOptions="StartAndExpand">
-        <DataTemplate>
-          <ViewCell>
-            <Grid Padding="5"
-                      ColumnSpacing="10"
-                      RowSpacing="2">
-              <Image Source="{Binding Avatar}" HeightRequest="80" />
-              <Label Grid.Column="0" Text="{Binding UserName}" />
-            </Grid>
-          </ViewCell>
-        </DataTemplate>
-      </ListView.ItemTemplate>
-      <ListView.Footer>
-        <StackLayout></StackLayout>
-      </ListView.Footer>
-
-    </ListView>
-
-
-
-    <StackLayout Orientation="Horizontal" VerticalOptions="Start">
-      <Label Text="Recevoir les notifications push" />
-      <Switch x:Name="pushstatus" />
-    </StackLayout>
-
-    <StackLayout Orientation="Horizontal">
-      <Label Text="Utiliser ma position" />
-      <Switch x:Name="use_my_pos" HorizontalOptions="End" />
-    </StackLayout>
-
-
-    <StackLayout Orientation="Horizontal" VerticalOptions="Start">
-      <Label Text="Recevoir les demandes de devis de la part de professionnels uniquement"
-             StyleClass="Header"/>
-      <Switch x:Name="restrictToPro" />
-    </StackLayout>
-
-  </StackLayout>
-</ContentPage>
diff --git a/BookAStar/BookAStar/ViewModels/BillingLineViewModel.cs b/BookAStar/BookAStar/ViewModels/BillingLineViewModel.cs
new file mode 100644
index 00000000..1512b559
--- /dev/null
+++ b/BookAStar/BookAStar/ViewModels/BillingLineViewModel.cs
@@ -0,0 +1,78 @@
+using BookAStar.Interfaces;
+using BookAStar.Model.Workflow;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using XLabs.Forms.Mvvm;
+
+namespace BookAStar.ViewModels
+{
+    class BillingLineViewModel : ViewModel, IBillingLine
+    {
+        public BillingLineViewModel(BillingLine data)
+        {
+            if (data == null) data = new BillingLine();
+            count = data.Count;
+            description = data.Description;
+            unitaryCost = data.UnitaryCost;
+            duration = data.Duration;
+        }
+
+        protected int count;
+        public int Count
+        {
+            get
+            {
+                return count;
+            }
+
+            set
+            {
+                SetProperty<int>(ref count, value, "Count");
+            }
+        }
+        protected string description;
+        public string Description
+        {
+            get
+            {
+                return description;
+            }
+
+            set
+            {
+                SetProperty<string>(ref description, value, "Description");
+            }
+        }
+        protected TimeSpan duration;
+        public TimeSpan Duration
+        {
+            get
+            {
+                return duration;
+            }
+
+            set
+            {
+                SetProperty<TimeSpan>(ref duration, value, "Duration");
+            }
+        }
+
+        protected decimal unitaryCost;
+        public decimal UnitaryCost
+        {
+            get
+            {
+                return unitaryCost;
+            }
+
+            set
+            {
+                SetProperty<decimal>(ref unitaryCost, value, "UnitaryCost");
+            }
+        }
+    }
+}
diff --git a/BookAStar/BookAStar/ViewModels/BookQueryViewModel.cs b/BookAStar/BookAStar/ViewModels/BookQueryViewModel.cs
index daf82519..d59f904f 100644
--- a/BookAStar/BookAStar/ViewModels/BookQueryViewModel.cs
+++ b/BookAStar/BookAStar/ViewModels/BookQueryViewModel.cs
@@ -1,4 +1,5 @@
-using BookAStar.Model;
+using BookAStar.Interfaces;
+using BookAStar.Model;
 using BookAStar.Model.Social;
 using System;
 using System.Collections.Generic;
@@ -9,7 +10,7 @@ using System.Threading.Tasks;
 
 namespace BookAStar.ViewModels
 {
-    class BookQueryViewModel : XLabs.Forms.Mvvm.ViewModel
+    class BookQueryViewModel : XLabs.Forms.Mvvm.ViewModel, IBookQueryData
     {
         public BookQueryViewModel()
         {
diff --git a/BookAStar/BookAStar/ViewModels/DashboardViewModel.cs b/BookAStar/BookAStar/ViewModels/DashboardViewModel.cs
new file mode 100644
index 00000000..03d1abf4
--- /dev/null
+++ b/BookAStar/BookAStar/ViewModels/DashboardViewModel.cs
@@ -0,0 +1,137 @@
+using BookAStar.Helpers;
+using BookAStar.Model.Auth.Account;
+using System.Collections.ObjectModel;
+using System.Linq;
+using Xamarin.Forms;
+using XLabs.Forms.Mvvm;
+
+namespace BookAStar.ViewModels
+{
+    internal class DashboardViewModel : ViewModel
+    {
+        public string UserId
+        {
+            get
+            {
+                return User?.Id;
+            }
+        }
+
+        public bool AllowUseMyPosition
+        {
+            get
+            {
+                return MainSettings.AllowGPSUsage;
+            }
+            set
+            {
+                MainSettings.AllowGPSUsage = value;
+            }
+        }
+
+        public bool AllowProBookingOnly
+        {
+            get
+            {
+                return MainSettings.AllowProBookingOnly;
+            }
+            set
+            {
+                MainSettings.AllowProBookingOnly = value;
+            }
+        }
+
+        private long queryCount;
+        private User user;
+
+        public long QueryCount
+        {
+            get
+            {
+                return queryCount;
+            }
+        }
+
+        public User User
+        {
+            get { return user; }
+            protected set
+            {
+                SetProperty<User>(ref user, value, "User");
+                if (user!=null)
+                {
+                    user.PropertyChanged += User_PropertyChanged;
+
+                }
+
+                UpdateUserMeta();
+
+            }
+        }
+        private ImageSource avatar;
+        public ImageSource Avatar {  get {
+                return avatar;
+            } }
+
+        public ObservableCollection<User> Accounts { get; protected set; }
+        private string performerStatus;
+        public string PerformerStatus
+        {
+            get
+            {
+                return performerStatus;
+            }
+        }
+
+        public string UserName
+        {
+            get
+            {
+                return User?.UserName;
+            }
+        }
+
+        private bool userIsPro = false;
+
+        public DashboardViewModel()
+        {
+            Accounts = MainSettings.AccountList;
+            User = MainSettings.CurrentUser;
+            UpdateUserMeta();
+        }
+
+        private void UpdateUserMeta ()
+        {
+            string newStatusString;
+            long newQueryCount;
+            bool newUserIsPro;
+            ImageSource newAvatar;
+            if (user==null)
+            {
+                newQueryCount = 0;
+                newUserIsPro = false;
+                newStatusString = null;
+                newAvatar = null;
+            }
+            else
+            {
+                newUserIsPro = User.Roles?.Contains("Performer") ?? false;
+
+                newQueryCount = userIsPro ? DataManager.Current.BookQueries.Count : 0;
+
+                newStatusString = userIsPro ?
+                     $"Profile professionel renseigné,\n{newQueryCount} demandes valides en cours" :
+                    "Profile professionel non renseigné";
+                newAvatar = UserHelpers.Avatar(user.Avatar);
+            }
+            SetProperty<string>(ref performerStatus, newStatusString, "PerformerStatus");
+            SetProperty<long>(ref queryCount, newQueryCount, "QueryCount");
+            SetProperty<ImageSource>(ref avatar, newAvatar, "Avatar");
+        }
+
+        private void User_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
+        {
+            UpdateUserMeta();
+        }
+    }
+}
\ No newline at end of file
diff --git a/BookAStar/BookAStar/ViewModels/EstimateViewModel.cs b/BookAStar/BookAStar/ViewModels/EstimateViewModel.cs
new file mode 100644
index 00000000..ef2a5162
--- /dev/null
+++ b/BookAStar/BookAStar/ViewModels/EstimateViewModel.cs
@@ -0,0 +1,91 @@
+using BookAStar.Model.Interfaces;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using XLabs.Forms.Mvvm;
+using BookAStar.Model.Workflow;
+using System.Collections.ObjectModel;
+using BookAStar.Model;
+
+namespace BookAStar.ViewModels
+{
+    class EstimateViewModel : ViewModel
+    {
+        public EstimateViewModel(Estimate data)
+        {
+            estimate = data;
+            AttachedFiles = new ObservableCollection<string>(data.AttachedFiles);
+            AttachedGraphicList = new ObservableCollection<string>(data.AttachedGraphicList);
+            Bill = new ObservableCollection<BillingLine>(data.Bill);
+            description = data.Description;
+            title = data.Title;
+            status = data.Status;
+        }
+
+        Estimate estimate;
+        
+        public ObservableCollection<string> AttachedFiles
+        {
+            get; protected set;
+        }
+
+        public ObservableCollection<string> AttachedGraphicList
+        {
+            get; protected set;
+        }
+
+        public ObservableCollection<BillingLine> Bill
+        {
+            get; protected set;
+        }
+
+
+        private string description;
+        public string Description
+        {
+            get
+            {
+                return description;
+            }
+
+            set
+            {
+                SetProperty<string>(ref description, value, "Description");
+            }
+        }
+
+        private int? status;
+        public int? Status
+        {
+            get
+            {
+                return status;
+            }
+
+            set
+            {
+                SetProperty<int?>(ref status, value, "Status");
+            }
+        }
+        private string title;
+        public string Title
+        {
+            get
+            {
+                return title;
+            }
+
+            set
+            {
+                SetProperty<string>(ref title, value, "Title");
+            }
+        }
+
+        public ClientProviderInfo Client {  get { return estimate.Client; } }
+
+        public BookQueryData Query { get { return estimate.Query; } }
+
+    }
+}
diff --git a/BookAStar/BookAStar/ViewModels/SettingsViewModel.cs b/BookAStar/BookAStar/ViewModels/SettingsViewModel.cs
deleted file mode 100644
index 4941d6c1..00000000
--- a/BookAStar/BookAStar/ViewModels/SettingsViewModel.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-using System;
-using XLabs.Forms.Mvvm;
-using XLabs.Platform.Services;
-
-namespace BookAStar.ViewModels
-{
-    internal class SettingsViewModel : XLabs.Forms.Mvvm.ViewModel
-    {
-
-    }
-}
\ No newline at end of file
diff --git a/BookAStar/BookAStar/ViewModels/UserLoginViewModel.cs b/BookAStar/BookAStar/ViewModels/UserLoginViewModel.cs
new file mode 100644
index 00000000..a38ec1a6
--- /dev/null
+++ b/BookAStar/BookAStar/ViewModels/UserLoginViewModel.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using XLabs.Forms.Mvvm;
+
+namespace BookAStar.ViewModels
+{
+    class UserLoginViewModel : ViewModel
+    {
+
+    }
+}
diff --git a/BookAStar/BookAStar/ViewModels/ViewModelBase.cs b/BookAStar/BookAStar/ViewModels/ViewModelBase.cs
index d9902e2b..bc17cb71 100644
--- a/BookAStar/BookAStar/ViewModels/ViewModelBase.cs
+++ b/BookAStar/BookAStar/ViewModels/ViewModelBase.cs
@@ -11,6 +11,7 @@ using System.Threading.Tasks;
 
 namespace BookAStar.ViewModels
 {
+    [Obsolete("Use legacy XLabs ViewModel")]
     public class ViewModelBase : IModelViewModel
     {
         public string Title { get; set; }
diff --git a/BookAStar/BookAStar/icon-anon.png b/BookAStar/BookAStar/icon-anon.png
deleted file mode 100644
index 38d6db94..00000000
Binary files a/BookAStar/BookAStar/icon-anon.png and /dev/null differ
diff --git a/BookAStar/BookAStar/packages.config b/BookAStar/BookAStar/packages.config
index 1577477c..25d993d0 100644
--- a/BookAStar/BookAStar/packages.config
+++ b/BookAStar/BookAStar/packages.config
@@ -7,11 +7,13 @@
   <package id="SQLite.Net.Core-PCL" version="3.1.1" targetFramework="portable45-net45+win8+wpa81" />
   <package id="SQLite.Net-PCL" version="3.1.1" targetFramework="portable45-net45+win8+wpa81" />
   <package id="Xam.Plugins.Settings" version="2.5.1.0" targetFramework="portable45-net45+win8+wpa81" />
-  <package id="Xamarin.Forms" version="2.3.2.127" targetFramework="portable45-net45+win8+wpa81" />
-  <package id="Xamarin.Forms.Maps" version="2.3.2.127" targetFramework="portable45-net45+win8+wpa81" />
+  <package id="Xamarin.Forms" version="2.3.0.34-pre1" targetFramework="portable45-net45+win8+wpa81" />
+  <package id="Xamarin.Forms.Maps" version="2.3.0.34-pre1" targetFramework="portable45-net45+win8+wpa81" />
+  <package id="XLabs.Caching" version="2.2.0-pre05" targetFramework="portable45-net45+win8+wpa81" />
   <package id="XLabs.Core" version="2.2.0-pre05" targetFramework="portable45-net45+win8+wpa81" />
   <package id="XLabs.Forms" version="2.2.0-pre05" targetFramework="portable45-net45+win8+wpa81" />
   <package id="XLabs.IoC" version="2.2.0-pre05" targetFramework="portable45-net45+win8+wpa81" />
   <package id="XLabs.Platform" version="2.2.0-pre05" targetFramework="portable45-net45+win8+wpa81" />
   <package id="XLabs.Serialization" version="2.2.0-pre05" targetFramework="portable45-net45+win8+wpa81" />
+  <package id="XLabs.Serialization.JSON" version="2.2.0-pre05" targetFramework="portable45-net45+win8+wpa81" />
 </packages>
\ No newline at end of file