Branch permissions layout
CE part of https://gitlab.com/gitlab-org/gitlab-ee/issues/179
Related javascript code has been refactored and also layout has been updated.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
CE part of https://gitlab.com/gitlab-org/gitlab-ee/issues/179
Related javascript code has been refactored and also layout has been updated.