All calls to get items now require passing in a userId. Made the model project portable. Also filled in more api calls.

MediaBrowser.Api/HttpHandlers/UsersHandler.cs

@@ -0,0 +1,22 @@
+using MediaBrowser.Common.Net;
+using MediaBrowser.Common.Net.Handlers;
+using MediaBrowser.Controller;
+
+namespace MediaBrowser.Api.HttpHandlers
+{
+    class UsersHandler : JsonHandler
+    {
+        public UsersHandler(RequestContext ctx)
+            : base(ctx)
+        {
+        }
+
+        protected override object ObjectToSerialize
+        {
+            get
+            {
+                return Kernel.Instance.Users;
+            }
+        }
+    }
+}