User Flag Expressions

Adds the ability to have expressions evaluated when flags are added and
removed.

Disco.Web/Views/User/Show.generated.cs

@@ -2,7 +2,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.34014
+//     Runtime Version:4.0.30319.42000
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -27,7 +27,6 @@ namespace Disco.Web.Views.User
     using System.Web.UI;
     using System.Web.WebPages;
     using Disco;
-    using Disco.BI.Extensions;
     using Disco.Models.Repository;
     using Disco.Services;
     using Disco.Services.Authorization;