Use relative _path helper URLs in the GitLab UI

Closes #40825

See merge request gitlab-org/gitlab-ce!15738

Replace absolute URLs on related branches/MRs with relative url to avoid hostname

Closes #40555

See merge request gitlab-org/gitlab-ce!15735

Fix loading branches list on cherry pick modal after merge.

Closes #33894

See merge request gitlab-org/gitlab-ce!15306

Add documentation about using US-English

Closes #40675

See merge request gitlab-org/gitlab-ce!15656

Fix transient error in pikadayToString

Closes #40858

See merge request gitlab-org/gitlab-ce!15754

fix #39233 - 500 in merge request

Closes #39233

See merge request gitlab-org/gitlab-ce!15774

Dependency validator

Closes #34834

See merge request gitlab-org/gitlab-ce!14009

- handle unchanged empty lines in inline diff

Fixed remove deploy key loading icon not being removed after canceling

Closes #37595

See merge request gitlab-org/gitlab-ce!15779

Resolve "updateEndpoint undefined on Issue page"

Closes #40715

See merge request gitlab-org/gitlab-ce!15698

Use Gitaly 0.59.0

See merge request gitlab-org/gitlab-ce!15795

Docs: fix typo

See merge request gitlab-org/gitlab-ce!15798

Update prometheus-client-mmap gem to highly optimized version

See merge request gitlab-org/gitlab-ce!15796

[CE] Fix message when pushing to Geo secondary

See merge request gitlab-org/gitlab-ce!15793

Fixed merge request locked icon size

Closes #40876

See merge request gitlab-org/gitlab-ce!15767

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/40825

Merge branch '40761-remove-the-checkbox-for-starting-a-new-pipeline-in-auto-devops-settings' into 'master'

Resolve "Remove the checkbox for starting a new pipeline in Auto DevOps settings"

Closes #40761

See merge request gitlab-org/gitlab-ce!15714

Allow commenting on individual commits inside an MR

Closes #31847

See merge request gitlab-org/gitlab-ce!12148

+ change string concatenation to help with GC pressure.
+ fix metric producing incompatible label sets

Fix QA group creation by filling required fileds

See merge request gitlab-org/gitlab-ce!15786

Remove Rugged::Repository#empty?

Closes gitaly#699

See merge request gitlab-org/gitlab-ce!15622

Docs: refactor Pages index

See merge request gitlab-org/gitlab-ce!15411

Use Markdown styling for new project guidelines

Closes #40886

See merge request gitlab-org/gitlab-ce!15785

Docs: admin index

Closes #39688

See merge request gitlab-org/gitlab-ce!15724