Show in MR widget if the merge was reverted
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=15037) </details> <!--IssueSummary end--> Example: https://gitlab.com/gitlab-org/gitlab_git/merge_requests/65 was reverted by https://gitlab.com/gitlab-org/gitlab_git/commit/12f23c3a758210e936234e5cb724df6242bd5f0e, which it knows because it doesn't show the `Revert` button. It would be nice if it stated outright "The merge commit was reverted by Douwe Maan in [SHA] 10 minutes ago". Could also be shown on an individual commit page. ### Design ![image](https://gitlab.com/gitlab-org/gitlab-ce/uploads/ce902646ed04367a0c6e4ee5028ec466/image.png)
issue