Update Angular2Spa to current versions of Angular 2, angular2-universal-preview, etc.

templates/Angular2Spa/typings/url-workaround.d.ts

@@ -0,0 +1,7 @@
+// This file is a workaround for angular2-universal-preview version 0.84.2 relying on the declaration of
+// Node's 'url' module. Ideally it would not declare dependencies on Node APIs except where it also supplies
+// the definitions itself.
+
+declare module 'url' {
+    export interface Url {}
+}