chore: adjust formatting to new clang-format.

- fixes wrapping for object literal keys called `template`.
- spacing in destructuring expressions.
- changes to keep trailing return types of functions closer to their
  function declaration.
- better formatting of string literals.

Closes #4828

modules/angular2/test/http/http_spec.ts

@@ -31,7 +31,7 @@ import {
 } from 'angular2/http';
 
 var Rx = require('@reactivex/rxjs/dist/cjs/Rx');
-let{Observable, Subject} = Rx;
+let {Observable, Subject} = Rx;
 
 class SpyObserver extends SpyObject {
   onNext: Function;