- Typo in docs
- Newline between test/expectation in `api/issues_spec`
- Use `find_by` instead of `reference_by` in the structure defining awardables

- Use issue/merge_request IID instead of ID
- Duplicate the original `TimeTrackingEndpoints` concern (+ specs) for V3, since
  this is a breaking change.

- Instead of `issuable_id`

- Instead of `merge_request_id` and `issue_id`
- The API also deals with `snippet_id`, which remains unchanged (since snippets
  don't have `iid`s
- Duplicate the original `AwardEmoji` API (and spec) for use with the V3
  API, since this is a breaking change.

- Instead of `merge_request_id`
- Duplicate the original `MergeRequestDiffs` API (and spec) for use with the V3
  API, since this is a breaking change.

- As opposed to the `id` that was previously being used.
- This brings the API routes closer to the web interface's routes.
- This is specific to API v4.

- As opposed to the issue `id` that was previously being used.
- This brings the API routes closer to the web interface's routes.
- This is specific to API v4.

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

[ci skip]

This commit was about 6 commits before squashing, with the main goal to
make all tests green. Now, after pushing this commit we'll see what the
CI has to say about that.

This commit only renames the commits, the cascading effects will be
dealt with later.

Fixes gitlab-org/gitlab-ce#28515

[ci skip]

This will be necessary when adding gitaly settings. This version
doesn't make any functional changes, but allows us to include this
breaking change in 9.0 and add the needed extra settings in the future
with backwards compatibility

The query parameter `membership` should be more self-explaining.

The `projects/:id/pipelines` exposed a lot of extra details
that are superfluous and it was taking extra resources to fetch them.

To get more details about a pipeline, use
`projects/:id/pipelines/:pipeline_id`.