refact(grunt) upgrade to grunt 0.4.0
refact(grunt-server): Upgrade to grunt 0.4.0
refact(authentication) move into common/authentication
test(login-toolbar): create unit tests (needed to use jquery in the tests to get selectors)
refact(authentication): major refactoring of the auth stuff.

Now uses $dialog service from angular-ui bootstrap project
Fewer watches
Cleaner authentication service API