Handle custom Git hook result in GitLab UI
What does this MR do?
This MR fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/19190 It allows to show messages from git custom hooks
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This MR fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/19190 It allows to show messages from git custom hooks