refactor(angular2/angular2_sfx): Allows no-module integration of Angular2

Translates angular2/angular2_sfx to TypeScript in order to allow Angular2 integration without modules.

Author: ttowncompiled

modules/angular2/angular2_sfx.es6 renamed to modules/angular2/angular2_sfx.ts

@@ -1,20 +1,30 @@
-import * as angular from './angular2';
+import * as ng from './angular2';
 // the router should have its own SFX bundle
 // But currently the module arithemtic 'angular2/router_sfx - angular2/angular2',
 // is not support by system builder.
 import * as router from './router';
 
-angular.router = router;
+var angular: AngularOne = <any>ng;
+(<AngularWindow>window).angular = angular;
+
+var _prevAngular = (<AngularWindow>window).angular;
 
-var _prevAngular = window.angular;
 
+angular.router = router;
 /**
  * Calling noConflict will restore window.angular to its pre-angular loading state
  * and return the angular module object.
  */
 angular.noConflict = function() {
- window.angular = _prevAngular;
+ (<AngularWindow>window).angular = _prevAngular;
  return angular;
 };
 
-window.angular = angular;
+interface AngularOne {
+ router: any;
+ noConflict(): any;
+}
+
+interface AngularWindow extends Window {
+ angular: any;
+}