Improve labels select rendering

Closes #48230 and #57734

See merge request gitlab-org/gitlab-ce!25281

Externalize markdown toolbar tooltips

Closes #53413

See merge request gitlab-org/gitlab-ce!25529

Replace tooltip texts in the markdown toolbar with bindings to gettext
calls

Author:    Enrique Alcantara <enrique@crunch.io>

Refactor note_form_spec.js to use Vue test utils

See merge request gitlab-org/gitlab-ce!25571

bin/background_jobs: use pgroups

Closes #40396

See merge request gitlab-org/gitlab-ce!25654

Remove an obsolete workaround for GRPC unavailable errors

See merge request gitlab-org/gitlab-ce!25645

Resolve "Broken master due to stylelint errors"

Closes #58362

See merge request gitlab-org/gitlab-ce!25662

Pare down create_project_with_auto_devops_spec

See merge request gitlab-org/gitlab-ce!25577

Resolve "Update the spinner component"

Closes #20084

See merge request gitlab-org/gitlab-ce!25186

The new spinner is purely CSS
It is used for the loading_icon gitlab-ui component

Show header and footer system messages in email

Closes #56863

See merge request gitlab-org/gitlab-ce!25474

Add docs for EE components in CE components

See merge request gitlab-org/gitlab-ce!25649

Upgrade jest and related dependencies

Closes #54834

See merge request gitlab-org/gitlab-ce!25597

CE port of noteable-discussion-ee-differences

See merge request gitlab-org/gitlab-ce!25638

This reverts commit 00675311.

Update best_practices.md let section to also reference let! variables.

See merge request gitlab-org/gitlab-ce!22496

Revert "Quarantine GitHub OAuth test"

Closes gitlab-org/quality/nightly#83

See merge request gitlab-org/gitlab-ce!25636

This removes other outdated babel@6 dependencies as well.

Unfortunately the newer version of vue-jest has a dependency of an older
version of ts-jest. In order to satisfy the peerDependency from ts-jest,
we are forcing the version@24. The only "breaking" change from ts-jest
23->24 is that it requires a newer version of jest. This might be
obsolete soon, as vue-jest plans on switching to babel eventually.

Use Web IDE path for merge request edit buttons

See merge request gitlab-org/gitlab-ce!25595

Fix bug where project topics truncate

Closes #57788

See merge request gitlab-org/gitlab-ce!25398

Enabling performance metrics on Review Apps

Closes #57881

See merge request gitlab-org/gitlab-ce!25549

This reverts commit 970576c5.

Update apollo libraries

See merge request gitlab-org/gitlab-ce!25608

Backport: Add project level config for merge pipelines

See merge request gitlab-org/gitlab-ce!25385

Jira: make issue links title compact

See merge request gitlab-org/gitlab-ce!25609

Port of a community contribution from @glensc to upstream.

Bring back mentions of Redash

See merge request gitlab-org/gitlab-ce!25618

Resolve "Add missing karma tests to the the MR Diff components"

Closes #55505

See merge request gitlab-org/gitlab-ce!24733

Quarantine GitHub OAuth tests

See merge request gitlab-org/gitlab-ce!25631

Allow Gitaly N+1 calls for RootController#index

See merge request gitlab-org/gitlab-ce!25514