[11.9] Revert "Remove HipChat integration from GitLab"

See merge request gitlab-org/gitlab-ce!27257

Jira Services Doc update to String

See merge request gitlab-org/gitlab-ce!26683

(cherry picked from commit d69b12f9)

9afdca3c Jira Services Doc update to String

Replace all '9koXpg98eAheJpvBs5tK' occurrences with
'<your_access_token>' in API docs.

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

Fix: API Documentation typo on Microsoft Teams slug

See merge request gitlab-org/gitlab-ee!5412

States this service was deprecated on 10.3 and his behavior depends on
the kubernetes service status. Also includes a link for the release post
for more information.

+ Add support for the new separate channel and events settings
* Dry up chat notifications in the service properties definitions

Douwe Maan authored 7 years ago and Bob Van Landuyt :neckbeard: committed 7 years ago

Rename `build_events` to `job_events`

Closes #31620

See merge request !11287

This reverts merge request !11287

For backwards compatibility

- Reorder slash command api requests, include slack response example
- Case fix and added changelog

The endpoint dropped, get ':id/repository/commits/:sha/jobs', should be
replace by a new endpoint.

MR: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9250/

See https://gitlab.com/madlittlemods/gl-mock-ci-service