Add support for embedded videos
- This MR introduces support for embedded videos with a fallback for
/help. Thumbnails and special styling can come later.
- Follow-up from https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/29683.
- Implementation per Mike's requested on Slack:
@marcia I think we should have the capability to easily embed videos like that, and also create some kind of expanding video link that uses a video icon or thumbnail.
.gitlab-ci.ymlchanges for review app
- Merge this MR
- Merge https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/29683
Also: discuss with the team the guidelines for embedding videos and document them.