More Navigation backend work.

- MenuPart/record
- Permissions and AdminMenu for the core nav package as well as some placeholders for the upcoming work.

--HG--
branch : dev

src/Orchard.Web/Core/Navigation/Controllers/AdminController.cs

@@ -0,0 +1,21 @@
+using System.Web.Mvc;
+using Orchard.Core.Navigation.ViewModels;
+using Orchard.Localization;
+
+namespace Orchard.Core.Navigation.Controllers {
+    [ValidateInput(false)]
+    public class AdminController : Controller {
+        public IOrchardServices Services { get; private set; }
+
+        public AdminController(IOrchardServices services) {
+            Services = services;
+            T = NullLocalizer.Instance;
+        }
+
+        public Localizer T { get; set; }
+
+        public ActionResult Index() {
+            return View(new NavigationIndexViewModel());
+        }
+    }
+}