Fixes up the starter kit installer in the back office with it's legacy implementation. Adds some handy methods for webapi routing for areas.

src/Umbraco.Web/AreaRegistrationContextExtensions.cs

@@ -0,0 +1,28 @@
+using System.Web.Http;
+using System.Web.Mvc;
+using System.Web.Routing;
+
+namespace Umbraco.Web
+{
+    internal static class AreaRegistrationContextExtensions
+    {
+        public static Route MapHttpRoute(this AreaRegistrationContext context, string name, string url, object defaults, string[] namespaces)
+        {
+            var apiRoute = context.Routes.MapHttpRoute(
+                name,
+                url,
+                defaults);
+
+            //web api routes don't set the data tokens object
+            if (apiRoute.DataTokens == null)
+            {
+                apiRoute.DataTokens = new RouteValueDictionary();
+            }
+            apiRoute.DataTokens.Add("area", context.AreaName);
+            apiRoute.DataTokens.Add("Namespaces", namespaces); //look in this namespace to create the controller
+            apiRoute.DataTokens.Add("UseNamespaceFallback", false); //Don't look anywhere else except this namespace!
+
+            return apiRoute;
+        }
+    }
+}