Implements the alternate style sheet publication

* style.css: this floating breaks my dark style

* Global.asax: the application object is now compiled at runtime,
its code is in App_Code

* YavscHelpers.cs: Implements a method helping to refer on themed
  stylesheets,
presenting the "alternate" stylesheet usage.

* App.master: Uses the new Helper function to refer on the
main style sheet `style.css`

* Web.config: * no more default controller, instead, modify the app
  code
* the client side javascript validation is custommized, and we do not
  need the M$ js for now

* Web.csproj: Global.asax.cs becomes a content, compiled at runtime,
  found in ~/App_Code

* Global.asax.cs: Now compiles at runtime.

* Makefile: adds my deployment targets

web/Models/App.master

@@ -11,8 +11,7 @@ Page.StyleSheetTheme = (string) Profile.UITheme; %>
 <meta charset="utf-8">
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="viewport" content="width=device-width, initial-scale=1" />
-<link rel="stylesheet" href="<%=Url.Content("~/App_Themes/"+Page.StyleSheetTheme+"/style.css")%>" />
-<link rel="stylesheet" href="<%=Url.Content("~/App_Themes/style.css")%>" />
+<%= Html.ThemeCSSLinks(Page.StyleSheetTheme,"style")%>
 <link rel="stylesheet" href="<%=Url.Content("~/App_Themes/font-awesome.css")%>" />
 <link rel="stylesheet" href="<%=Url.Content("~/App_Themes/jquery-ui.css")%>" />
 <link rel="stylesheet" href="<%=Url.Content("~/App_Themes/prettify.css")%>" />