Improves notification system

* ICalendarManager.cs: WIP booking TODO a calendar provider

* NpgsqlProfileProvider.cs: Fixes the defaultValue specification from
  config file

* BlogsController.cs:
* AccountController.cs:
* CalendarController.cs: refactoring : the Yavsc controller name

* instdbws.sql: a new profile value : a boolean, `AllowCookies` :'{

* style.css: a class to display notification

* HomeController.cs: Notifies users this site uses cookies (what for
  an information!)
If authenticated, at dimissing this notification, the user's profile
  is updated,
and he'll not mess up anymore with the info.

* App.master:
* YavscHelpers.cs: adds usage of click_action value at
displaying a notification.

* yavsc.js: Implements the notification `click_action`

* Web.config: * enables anonymous profiles
* adds a new `allowcookies` profile property

* Web.csproj: Yavsc controller refactoring

* YaEvent.cs:
* IFreeDateSet.cs: WIP booking

* LocalizedText.resx:
* LocalizedText.fr.resx:
* LocalizedText.Designer.cs:
* LocalizedText.fr.Designer.cs: implements the message "uses cookies"

* YavscModel.csproj: refactoring

* Notification.cs: The Yavsc otification will start as a Google one
  ...
many properties are not yet used, but all seems usefull.

* Web.config: code prettying

* YavscController.cs: Gives Yavsc a concrete base controller

yavscModel/Calendar/IFreeDateSet.cs

@@ -0,0 +1,54 @@
+//  FreeDate.cs
+//
+//  Author:
+//       Paul Schneider <paulschneider@free.fr>
+//
+//  Copyright (c) 2015 Paul Schneider
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public License
+//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+using System;
+using Yavsc.Model.Google;
+using System.Collections.Generic;
+
+namespace Yavsc.Model.Calendar
+{
+
+	/// <summary>
+	/// Free date.
+	/// </summary>
+	public interface IFreeDateSet
+	{
+		/// <summary>
+		/// Gets or sets the reference.
+		/// </summary>
+		/// <value>The reference.</value>
+		 IEnumerable<Period> Values { get; set; }
+		/// <summary>
+		/// Gets or sets the duration.
+		/// </summary>
+		/// <value>The duration.</value>
+		 TimeSpan Duration { get; set; }
+		/// <summary>
+		/// Gets or sets the attendees.
+		/// </summary>
+		/// <value>The attendees.</value>
+		 string UserName { get; set; }
+		/// <summary>
+		/// Gets or sets the location.
+		/// </summary>
+		/// <value>The location.</value>
+		 string Location { get; set; }
+	}
+}
+