Factoring, Refactoring

* App.master:
* yavscModel.csproj:
* UserPost.aspx:
* UserPosts.aspx:
* StatusChange.cs:
* IContentProvider.cs:
* NpgsqlContentProvider.cs: 

* BlogsController.cs: unwanted message "Blogs"

* style.css: More visibility for messages and error

web/Models/App.master

@@ -49,12 +49,12 @@
 
 
 <% if (ViewData["Error"]!=null) { %>
-<div class="Error">
+<div class="error">
 <%= Html.Encode(ViewData["Error"]) %>
 </div>
 <% } %>
 <% if (ViewData["Message"]!=null) { %>
-<div class="Message">
+<div class="message">
 <%= Html.Encode(ViewData["Message"]) %>
 </div>
 <% } %>