Lots of code cleanup, lots of unused/obsolete classes & files removed.

src/Umbraco.Web/UI/JavaScript/UmbracoClientDependencyLoader.cs

@@ -0,0 +1,44 @@
+using System.Web.UI;
+using ClientDependency.Core.Controls;
+using ClientDependency.Core.FileRegistration.Providers;
+using Umbraco.Core.IO;
+
+namespace Umbraco.Web.UI.JavaScript
+{
+    /// <summary>
+    /// Used to load in all client dependencies for Umbraco.
+    /// Ensures that both UmbracoClient and UmbracoRoot paths are added to the loader.
+    /// </summary>
+    public class UmbracoClientDependencyLoader : ClientDependencyLoader
+    {
+        /// <summary>
+        /// Set the defaults
+        /// </summary>
+        public UmbracoClientDependencyLoader()
+            : base()
+        {
+            this.AddPath("UmbracoClient", IOHelper.ResolveUrl(SystemDirectories.UmbracoClient));
+            this.AddPath("UmbracoRoot", IOHelper.ResolveUrl(SystemDirectories.Umbraco));
+            this.ProviderName = LoaderControlProvider.DefaultName;
+
+        }
+
+        public static ClientDependencyLoader TryCreate(Control parent, out bool isNew)
+        {
+            if (ClientDependencyLoader.Instance == null)
+            {
+                var loader = new UmbracoClientDependencyLoader();
+                parent.Controls.Add(loader);
+                isNew = true;
+                return loader;
+            }
+            else
+            {
+                isNew = false;
+                return ClientDependencyLoader.Instance;
+            }
+
+        }
+
+    }
+}