* CatalogManager.cs: Uses GetDefaultProvider
* Catalog.cs: the Catalog object now should support a unique id in the
system : UID, exposed as one of its properties.
* AccountController.cs: new static method te get an user profile by
its name.
* AdminController.cs: Uses the Yavsc.Admin namespace (refactoring)
* Web.csproj:
* BlogManager.cs:
* BackOfficeController.cs: refactoring
* BlogsController.cs: Fixes the Blog title
* FrontOfficeController.cs: Changes on the go for the Command object
* AddRole.aspx: minor syntax change
* UserPosts.aspx: show the blog title
* style.css: black transparent for the background of posts
* Profile.cs: Method FromProfileBase became a constructor
* Commande.cs: nothing
* Estimate.aspx: moved to the frontoffice views
* CatalogHelper.cs: Writting GetDefaultProvider
