* Presta.csproj: A first class

* AssemblyInfo.cs: initial commit

* NpgsqlCircleProvider.cs: circle members are now stored in bd upon
  their user's name

* InputCircle.cs: fixes the new CircleManager interface usage

* Yavsc.sln: Adds the `Presta` project

* CircleController.cs: * Authorize some Http methods
* Lists circles as circles

* style.css: Fixes the missing "hidden" css class

* AccountController.cs: using the new Circle provider interface

* BlogsController.cs: * using the new Circle provider interface
* do not test blog entry collections in order to group them by a
  unique user name or title, it's too bad,
instead, keep user's request id as guide to model and view.

* YavscHelpers.cs: Adds a Circle Html formatter

* Circles.aspx: List of circles is now given as a list of `Circle`
  objects

* instdbws.sql: fixes the db in order to store user names in circle
  member's records.

* BlogEntryCollection.cs: ConcernsAUniqueTitle and ConcernsAUniqueUser
  are now Obsoletes

* UUTBlogEntryCollection.cs: Drops a useless ctor

* CircleProvider.cs: The `CircleManager` now delivers the user's
  circle as a `Circle` object collection.

Presta/Properties/AssemblyInfo.cs

@@ -0,0 +1,47 @@
+//
+//  AssemblyInfo.cs
+//
+//  Author:
+//       Paul Schneider <paul@pschneider.fr>
+//
+//  Copyright (c) 2015 GNU GPL
+//
+//  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.Reflection;
+using System.Runtime.CompilerServices;
+
+// Information about this assembly is defined by the following attributes.
+// Change them to the values specific to your project.
+
+[assembly: AssemblyTitle ("Presta")]
+[assembly: AssemblyDescription ("")]
+[assembly: AssemblyConfiguration ("")]
+[assembly: AssemblyCompany ("")]
+[assembly: AssemblyProduct ("")]
+[assembly: AssemblyCopyright ("GNU GPL")]
+[assembly: AssemblyTrademark ("")]
+[assembly: AssemblyCulture ("")]
+
+// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
+// The form "{Major}.{Minor}.*" will automatically update the build and revision,
+// and "{Major}.{Minor}.{Build}.*" will update just the revision.
+
+[assembly: AssemblyVersion ("1.0.*")]
+
+// The following attributes are used to specify the signing key for the assembly,
+// if desired. See the Mono documentation for more information about signing.
+
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("")]
+