fix(setup): use upstream traceur with explicit patches

Also correct the transpile to ES6

Also support generics correctly

All patches are hooked in via `/tools/transpiler/index.js`
https://github.com/google/traceur-compiler/issues/1700
https://github.com/google/traceur-compiler/issues/1699
https://github.com/google/traceur-compiler/issues/1708
https://github.com/google/traceur-compiler/issues/1625
https://github.com/google/traceur-compiler/issues/1706

modules/angular2/src/core/annotations/visibility.js

@@ -8,6 +8,7 @@ import {DependencyAnnotation} from 'angular2/di';
 export class Parent extends DependencyAnnotation {
   @CONST()
   constructor() {
+    super();
   }
 }
 
@@ -18,5 +19,6 @@ export class Parent extends DependencyAnnotation {
 export class Ancestor extends DependencyAnnotation {
   @CONST()
   constructor() {
+    super();
   }
 }