doc: fix a merge artifact

Conflicts:
	lib/core_dom/tagging_view_factory.dart
fix(ngModel): add input type tel to ngModel directive
revert(NgView): Reverts "Make use of the ViewPort"

This reverts commit ed40de4d63f48b5b565c2b8be05fe15c0fd5c327.

Conflicts:
	lib/routing/ng_view.dart
	test/routing/routing_spec.dart
refactor: Refactor test setup.

Befor each test, a div element with attribute ng-app, is created. This is a container into which test can put some content. This container is destroyed after each test

refactor(Tests): Test
feat(EventHandler): EventHandler exposes method to register a callback.

EventHandler exposes and API to register a callback programatically.
InputSelect is the first component to utilize that API for handling
change event.