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.

Remove EE-specic parts from issue_card_spec.js

Closes #10503

See merge request gitlab-org/gitlab-ee!10620

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

Improve project merge request settings

See merge request gitlab-org/gitlab-ee!10366

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

Move serverless karma specs to jest

Closes gitlab-ce#60154

See merge request gitlab-org/gitlab-ee!10634

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 two anchors in EE docs

See merge request gitlab-org/gitlab-ee!10635

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

Geo admin panel for upload verification

Closes #5591

See merge request gitlab-org/gitlab-ee!9720

Subscriptions doc page edits: clarify it's also for ongoing management, reduce duplication in Support contact info

See merge request gitlab-org/gitlab-ee!10627

Subscriptions doc page edits: clarify it's also for ongoing management, reduce duplication in Support contact info

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.

Sync mode by default will soon be removed.