Removing ci_variables_complex_expressions feature flag and deprecated code branches

See merge request gitlab-org/gitlab-ce!30717

Resolve "Commit search result doesn't pass WCAG color audit"

Closes #61342

See merge request gitlab-org/gitlab-ce!30312

Allow parameters for rake gitlab:seed:issues

See merge request gitlab-org/gitlab-ce!30689

Backport "Cleanup usages of `JSON.parse` in specs"

See merge request gitlab-org/gitlab-ce!30712

Prefer `json_response` where applicable.

Fixed style-lint errors for `panels.scss`

Closes #59875

See merge request gitlab-org/gitlab-ce!30748

Rewrite to avoid square brackets, minimizing Kramdown warnings

See merge request gitlab-org/gitlab-ce!30773

Document db:migrate:status rake task

Closes #63908

See merge request gitlab-org/gitlab-ce!30202

Update ES indexer docs for Omnibus users

Closes #63207

See merge request gitlab-org/gitlab-ce!29731

Fix linebreak rendering in Mermaid flowcharts

Closes #54588

See merge request gitlab-org/gitlab-ce!30730

Clean-up some confusing info from security docs

See merge request gitlab-org/gitlab-ce!29495

Avoid using HTML when plain text and markdown work

See merge request gitlab-org/gitlab-ce!30768

Add nfs autodetection section in NFS docs

Closes gitaly#1767

See merge request gitlab-org/gitlab-ce!30486

Fix links to documentation styleguide

See merge request gitlab-org/gitlab-ce!30732

Using the old link redirects to
https://docs.gitlab.com/ee/development/documentation/index.html
which does not show the mentioned documentation.

Add usage of `default:`

Closes #63351

See merge request gitlab-org/gitlab-ce!30677

Update job artifact download docs

See merge request gitlab-org/gitlab-ce!30714

Create docs for required pipeline config

See merge request gitlab-org/gitlab-ce!30660

Check for "Uninstall" button reducing friction

See merge request gitlab-org/gitlab-ce!30713

Clean up the Prometheus custom dashboards docs

See merge request gitlab-org/gitlab-ce!30582

- Place all under one section
- Fix Markdown

Merge branch 'docs/12733-docs-using-multiple-extends-in-gitlab-ci-yml-introduced-in-gitlab-12' into 'master'

Specify what version of multiple extends in docs

Closes gitlab-ee#12733

See merge request gitlab-org/gitlab-ce!30667

SSoT for administration/high_availability docs

Closes #64560

See merge request gitlab-org/gitlab-ce!30729

- Make sure we have type defined in the frontmatter
- Add troubleshooting sections where absent
- Meaningful intros where absent

SSoT for administration/auth docs

Closes #64559

See merge request gitlab-org/gitlab-ce!30727

- Make sure we have type defined in the frontmatter
- Add troubleshooting sections where absent
- Meaningful intros where absent

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/39964

Closes #39964

See merge request gitlab-org/gitlab-ce!30722

Fix broken vue i18n strings

See merge request gitlab-org/gitlab-ce!30753

Docs: Add more detail to sign-up restrictions

See merge request gitlab-org/gitlab-ce!30580