Add docs about QA page objects and pages DSL

See merge request gitlab-org/gitlab-ce!16357

Resolve ""New branch" and "New tag" actions are pointless on an empty repository"

Closes #39988

See merge request gitlab-org/gitlab-ce!16332

Remove call to ProjectTeam#<< in MR API spec

See merge request gitlab-org/gitlab-ce!16388

Resolve "Store the number of merge request commits in merge_request_diffs.commits_count"

Closes #38068

See merge request gitlab-org/gitlab-ce!16164

Make modal dialog common for Groups tree app

Closes #41613

See merge request gitlab-org/gitlab-ce!16311

Fixed tiny typo in end_to_end_tests.md

See merge request gitlab-org/gitlab-ce!16386

Resolve "Incorrect default merge request title when Jira activated"

Closes #36669

See merge request gitlab-org/gitlab-ce!16356

apply documentation changes from EE to CE

See merge request gitlab-org/gitlab-ce!16381

Resolve 'Rebase fails with "something went wrong" and huge ugly conflict error.'

Closes #41820

See merge request gitlab-org/gitlab-ce!16326

Add `pipelines` endpoint to merge requests API

Closes #39214

See merge request gitlab-org/gitlab-ce!15454

Fix GCP redirect

Closes #41867

See merge request gitlab-org/gitlab-ce!16355

Exclude sast job from being run in docs only changes

Closes #41818

See merge request gitlab-org/gitlab-ce!16344

Validate GitLab QA selectors

Closes gitlab-qa#58

See merge request gitlab-org/gitlab-ce!16109

Admin dispatcher JS imports

See merge request gitlab-org/gitlab-ce!16315

Refactor dashboard activities path

See merge request gitlab-org/gitlab-ce!16361

Exclude translations from coverage report

See merge request gitlab-org/gitlab-ce!16348

Refactor dispatcher sessions path

See merge request gitlab-org/gitlab-ce!16362

Refactor dispatcher search path

See merge request gitlab-org/gitlab-ce!16366

Fix up Web IDE user preference copy and buttons

Closes #41789

See merge request gitlab-org/gitlab-ce!16298

Fix bug where award emojis would be lost when moving issues between projects

Closes #33423

See merge request gitlab-org/gitlab-ce!16377