Change reviewer roulette to always pick the same reviewers for the same
branch name. We do this by:

1. Making the branch name 'canonical' across CE and EE by stripping a
   leading 'ce-' or 'ee-' and a trailing '-ce' or '-ee'. If people are
   following our branch naming guidelines, this should give the same
   branch name in both repos.
2. Converting the branch name to a stable integer by taking the integer
   form of its MD5.
3. Passing that integer as a seed to Ruby's `Random` class, which 'may
   be used to ensure repeatable sequences of pseudo-random numbers
   between different runs of the program' (from the Ruby documentation).

The upshot is that the same branch name (in CE and EE) should always
pick the same reviewers, and those should be evenly distributed across
the set of possible reviewers due to the use of MD5.

Update RegExp syntax link to RE2

See merge request gitlab-org/gitlab-ce!27090

CI ref pattern matching now uses RE2 instead of Ruby.
See
https://about.gitlab.com/2019/04/01/security-release-gitlab-11-dot-9-dot-4-released/ for more information.

Resolve "Weight trainee maintainers higher in reviewer roulette"

Closes #60035

See merge request gitlab-org/gitlab-ce!27043

Extract create merge request quick action spec

Closes #59570

See merge request gitlab-org/gitlab-ce!26914

Extract w-i-p quick action to a shared example

Closes #59570

See merge request gitlab-org/gitlab-ce!26923

Extract duplicate quick action spec to a shared example

Closes #59570

See merge request gitlab-org/gitlab-ce!26912

Add touch events for diff viewers

Closes #60006

See merge request gitlab-org/gitlab-ce!26971

Safari on iOS sort of figures out the right thing here, but other
browsers need a specific touch to be referenced.

This makes it work on Chrome and Firefox on Android, as well as
Chrome DevTools mobile device view.

Migrate clusters tests to jest

Closes #58981

See merge request gitlab-org/gitlab-ce!27013

Move cluster applications manager tests from karma to jest. Fixes
some migration issues related with timeouts, and HTTP request
expectations.

Add `white-space: nowrap` to all buttons

Closes #60116

See merge request gitlab-org/gitlab-ce!27069

Enable Gitaly FindCommit caching for TreeController

See merge request gitlab-org/gitlab-ce!27100

CE Improve project merge request settings

See merge request gitlab-org/gitlab-ce!26495

Update dependency @gitlab/ui to ^3.2.0

See merge request gitlab-org/gitlab-ce!27077

CE Move serverless karma specs to jest

Closes #60154

See merge request gitlab-org/gitlab-ce!27085

Accessing /namespace/project/tree/master appears to query
FindCommit 5 times with identical parameters. This reduces
the number of FindCommit queries to 1.

Docs: Fix misc anchors

See merge request gitlab-org/gitlab-ce!27088

Docs: Fix anchors related to environments doc

See merge request gitlab-org/gitlab-ce!27082

docs: fix artifacts folder path, according to GitLab CE 11.8.2

See merge request gitlab-org/gitlab-ce!26536

Prioritize and simplify project settings content.

GitHub import: Run housekeeping after initial import

See merge request gitlab-org/gitlab-ce!26600

After an initial fetch, the repository will have many loose objects
and refs. Running a `git gc` will compact refs into `packed-refs` and
objects into `.pack` files, which should make importing pull
requests faster.

Part of https://gitlab.com/gitlab-org/gitlab-ce/issues/59477

Expand FindCommit caching to blob and refs

See merge request gitlab-org/gitlab-ce!27084

Sync mode by default will soon be removed.

These tests cause master failures because of an overflow
in vue-test-utils sync watcher setup.

Handle possible HTTP exception for Sentry client

Closes #60149

See merge request gitlab-org/gitlab-ce!27080

Prior this commit exceptions raised during a HTTP request
weren't caught by the Sentry client and were passed to the user.

In addition the Sentry client tried to catch a non-existent error
`Sentry::Client::SentryError`.

Now, the Sentry client catches all possible errors coming from
a HTTP request.

Resolve "Order labels alphabetically in issue boards"

Closes #59621

See merge request gitlab-org/gitlab-ce!26927

Rewrite related MRs widget with Vue

Closes #58926 and #57662

See merge request gitlab-org/gitlab-ce!27027

Restore original Security/DAST.gitlab-ci.yml template

Closes #59997

See merge request gitlab-org/gitlab-ce!26957

Reverts https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/26520
for Security/DAST.gitlab-ci.yml.

This enables FindCommit caching to the following actions:

* BlobController#show
* RefsController#logs_tree

It also improves caching in CommitsController since some
duplicate requests were occuring inside the before_action
definitions.

Clean up `noteable_id` for notes on commits

Closes #58612

See merge request gitlab-org/gitlab-ce!26104

Add Knative metrics to Prometheus

See merge request gitlab-org/gitlab-ce!24663