Resolve CE/EE diffs in api_spec

Closes gitlab-ee#6611

See merge request gitlab-org/gitlab-ce!28576

Resolve CE/EE diffs in label row

Closes gitlab-ee#10493

See merge request gitlab-org/gitlab-ce!28551

Resolve CE/EE diffs in signin box

Closes gitlab-ee#10495

See merge request gitlab-org/gitlab-ce!28553

Resolve CE/EE diffs in signin box

Closes #10495

See merge request gitlab-org/gitlab-ee!13102

Resolve CE/EE diffs in admin users form

Closes gitlab-ee#10508

See merge request gitlab-org/gitlab-ce!28520

Resolve CE/EE diffs in admin users form

Closes #10508

See merge request gitlab-org/gitlab-ee!13039

Fix uninitialized constant with HamlLint::LinterRegistry

Closes #62125

See merge request gitlab-org/gitlab-ce!28578

Master fixes

See merge request gitlab-org/gitlab-ee!13118

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Part of single codebase changes.

Files in lib will be eager loaded and hence will require haml_lint to be
loaded. Since this is only a development dependency, we can't assume
this gem will be available in production, so it should never be loaded
in production.

Move Chrome variables under conditional

See merge request gitlab-org/gitlab-ce!28505

The migration pod for the GitLab Helm Chart was failing because
of the NameError:

uninitialized constant HamlLint::Linter::NoPlainNodes::LinterRegistry

We now explicitly specify ::HamlLint::LinterRegistry to avoid resolution
errors.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/62125

Move some project routes under /-/ scope

See merge request gitlab-org/gitlab-ce!28435

Quick actions for adding/removing epic child relations

Closes #7330

See merge request gitlab-org/gitlab-ee!12772

Remove deprecated event_log_count field

Closes #11477

See merge request gitlab-org/gitlab-ee!13090

Quarantine failing test

See merge request gitlab-org/gitlab-ce!28517

Delegate CiVariable fabrication to API

See merge request gitlab-org/gitlab-ce!27924

Fix top border radius of discussions

Closes #58538

See merge request gitlab-org/gitlab-ce!28490

Add timing of repo size reporting

Closes #61395

See merge request gitlab-org/gitlab-ce!28516

Document the differences between Karma and Jest setup

Closes #59976

See merge request gitlab-org/gitlab-ce!28216

Part of single codebase changes.

Part of single codebase changes.

Part of single codebase changes.

Expire pipeline cache on job update

Closes #48024

See merge request gitlab-org/gitlab-ce!28432

Update broadcast message icons

Closes #39304

See merge request gitlab-org/gitlab-ce!28496