Bump to v1.1

* Change wording for copy_requester.
* Use currentUser().id() instead of ticket().requester().id() when copy_requester is checked.
* Change the way groups are fetched. We now fetch groups from /api/v2/groups/assignable.json
* Change the way the users are fetched. We now fetch users from /api/v2/groups/{id}/users.json.
* Use of a genericAjaxFailure method to handle all .fail events.