refactor(ts'ify): ts’ify mocks, directives and test_lib

Also cleans up global types.

modules/angular2/src/core/zone/ng_zone.ts

@@ -1,6 +1,8 @@
 import {List, ListWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
 import {normalizeBlank, isPresent, global} from 'angular2/src/facade/lang';
 
+export interface NgZoneZone extends Zone { _innerZone: boolean; }
+
 /**
  * A wrapper around zones that lets you schedule tasks after it has executed a task.
  *