Removes class constraint on RenderModel<T> and UmbracoTemplatePage<T> which will make things more flexible.

src/Umbraco.Web/Models/RenderModelOfTContent.cs

@@ -5,7 +5,7 @@ using Umbraco.Web.Mvc;
 namespace Umbraco.Web.Models
 {
     public class RenderModel<TContent> : RenderModel
-        where TContent : class, IPublishedContent
+        where TContent : IPublishedContent
     {
         /// <summary>
         /// Constructor specifying both the IPublishedContent and the CultureInfo

src/Umbraco.Web/Mvc/UmbracoTemplatePageOfTContent.cs

@@ -5,7 +5,7 @@ using Umbraco.Web.Models;
 namespace Umbraco.Web.Mvc
 {
     public abstract class UmbracoTemplatePage<TContent> : UmbracoViewPage<RenderModel<TContent>>
-        where TContent : class, IPublishedContent
+        where TContent : IPublishedContent
     {
         private object _currentPage;