improved Karma settings (unit tests, code coverage), AccountController unit tests; minor improvements
unit tests for LoginController
unit tests for AppController
unit tests for HelpController
unit tests for RegistrationController
unit tests for StatusController
unit tests for PeopleController; renamed PeopleListController to PeopleController
unit tests for FollowersController
unit tests for FollowingController
unit tests for PostController
unit tests for UserProfileController
unit tests for ExploreController
unit tests for EmailController
unit tests for PasswordController
unit tests for NewsController
unit tests for WallController
unit tests for MenuController
unit tests for CardController, 100% coverage for controllers