* [WIP] Add angular_test based tests to web-angular-simple

Fixes #386

* Update to angular2 3.0.0-beta+1
* update ACX and NG vers in web-angular-*
* update SDK to 1.23.0 for web-angular-*
* validate_templates: allow SDK 1.23.0 for angular templates
* Update pubspec and changelog version to 1.1.1-dev, 1.1.1