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

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 for modules that have many methods. 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

Omit blocked admins from repository check e-mails

Closes #63019

See merge request gitlab-org/gitlab-ce!29507

Master i18n

See merge request gitlab-org/gitlab-ce!29611

Use serialization for project boards

See merge request gitlab-org/gitlab-ce!29263

"Add ESLint  i18n plugin"

Closes #62359

See merge request gitlab-org/gitlab-ce!26789

Unnecessary offences include false positives as well as flagged
errors which have follow up issues in order to be addressed.

Not all issues have been addressed before this being submitted
in the spirit of results and iteration.

Remove spec/features/projects/files/user_edits_files_spec.rb from quarantine

Closes #60497

See merge request gitlab-org/gitlab-ce!29620

Refactor for cleaner caching in dashboards

See merge request gitlab-org/gitlab-ce!29444

Opts to cache a full list of cached dashboards
to better manage removing items from the cache.
This also allows dashboards to be stored in the
cache that don't necessarily correspond to a
single dashboard yml.

Update application-security index.md's (SAST,DAST,LM and DS)

See merge request gitlab-org/gitlab-ce!29547

Raise an error if creating the MergeRequestDiff fails

See merge request gitlab-org/gitlab-ce!29434

Click file row in repository Vue app to view file

See merge request gitlab-org/gitlab-ce!29596

disable CI variable complex expressions by default

See merge request gitlab-org/gitlab-ce!29576

[skip ci]

[skip ci]

[skip ci]

[skip ci]

Backport changes from 'Partially revert d9cb907c: "Avoid loading objects from DB in ES results"'

See merge request gitlab-org/gitlab-ce!29597

Process up to 100 commit messages for references when pushing to a new default branch

See merge request gitlab-org/gitlab-ce!29511