UK: fix spelling mistake
UK: rename test_put_update to appropriate test_partial_update
UK: fix submission  edit permission check
UK: set dispatch_uid for signals
UK: code refactor, set user/owner permission to xform project via signal, closes #271
UK: add Role.has_role method to check if a user has a specific role for a specified object
UK: set user/owner permission to xform via signal, closes #271
UK: test that on publishing a xlsform owner has owner permissions
UK: extend DjangoObjectPermissions instead