Added diff suggestion popover

Closes #56523

See merge request gitlab-org/gitlab-ce!29473

referring environment variables

See merge request gitlab-org/gitlab-ce!29676

Upgrade gitlab-ui and migrate gl-pagination

Closes #62097

See merge request gitlab-org/gitlab-ce!29555

- Upgraded gitlab-ui to v4.0.0
- Migrated pagination_links to reflect breaking changes introduced
in gitlab-ui v4.0.0

Master i18n

See merge request gitlab-org/gitlab-ce!29671

[skip ci]

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/56523

Docs: Add note clarifying the free status of pull mirroring

See merge request gitlab-org/gitlab-ce!29580

Fix a broken link in PROCESS.md

See merge request gitlab-org/gitlab-ce!29607

Fix styling for `app/assets/stylesheets/pages/detail_page.scss`

Closes #59900

See merge request gitlab-org/gitlab-ce!26870

Fix missing deployment rockets in monitor dashboard

See merge request gitlab-org/gitlab-ce!29574

Fixed inconsistencies in variable names for deployment
endpoints for monitoring dashboard which causes
deployment rocket icons to disappear

Add support for AsciiDoc include directive

Closes #18045

See merge request gitlab-org/gitlab-ce!28417

See http://asciidoctor.org/docs/user-manual/#include-directive

Fix sidebar flyout navigation

See merge request gitlab-org/gitlab-ce!29571

Update height of $mr-tabs-height

See merge request gitlab-org/gitlab-ce!29619

Don't import pull request comments from Gitea repos

Closes #63071

See merge request gitlab-org/gitlab-ce!29521

Issue 62684

See merge request gitlab-org/gitlab-ce!29430

The changes to the tests to support ignoring Gitea pull requests comments were
a bit of a hack. The suggestions provided by Ash McKenzie in
gitlab-org/gitlab-ce!29521 make things a bit more flexible if any future
changes need to be made to the tests.

The changes made to ignore

Add back sidekiq metrics exporter

See merge request gitlab-org/gitlab-ce!29647

Remove incorrect docs from deploy_boards.md

See merge request gitlab-org/gitlab-ce!29591

Backport of EE changes from MR !13763

See merge request gitlab-org/gitlab-ce!28983

https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/13763

Exclude preexisting lint issues for i18n

Closes #63223

See merge request gitlab-org/gitlab-ce!29649

Clarify ED25519 SSH key support

See merge request gitlab-org/gitlab-ce!28167

This was done in an MR pre
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/26789

inherit require 2fa for all subgroups and projects

See merge request gitlab-org/gitlab-ce!24965

Review toolbar modularization

Closes #62440

See merge request gitlab-org/gitlab-ce!29433

It has a lot of files because that's the point

Use scoped routes for labels and milestones

See merge request gitlab-org/gitlab-ce!29358

Update frontend code to use /-/ scope for milestones and labels routes
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Speed up commit loads by disabling BatchLoader replace_methods

See merge request gitlab-org/gitlab-ce!29633

AutoDevops fix ensure_namespace() does not explicitly test namespace

Closes #50797

See merge request gitlab-org/gitlab-ce!29567

Change SLA to target SLO for bugs and defects

See merge request gitlab-org/gitlab-ce!29615

We've seen a significant performance penalty when using
`BatchLoader#__replace_with!`. This defines methods on the batch loader
that proxy to the 'real' object using send. The alternative is
`method_missing`, which is slower.  However, we've noticed that
`method_missing` can be faster if:

1. The objects being loaded have a large interface.
2. We don't call too many methods on the loaded object.

In production, we've seen the rendering times of the merge request
widget increase as a result of loading commit data. BatchLoader attempts
to call replace_methods on the lazy object, but this has a significant
performance penalty. Disabling this mode
(https://github.com/exAspArk/batch-loader/pull/45) appears to cut load
times by about 50% for MergeRequestsController#show.

Relates to https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/6941