Add info about mdl to documentation

See merge request gitlab-org/gitlab-ce!30792

Updates check_mentions_for_xss_spec to use admin token for creating the user

Closes gitlab-org/quality/staging#65

See merge request gitlab-org/gitlab-ce!30943

Documentation for email confirmation signup restriction

Closes #63060

See merge request gitlab-org/gitlab-ce!30968

Document all the available options for SAST

Closes gitlab-ee#10120

See merge request gitlab-org/gitlab-ce!30747

Port all info from:

- security-products/sast/blob/master/docs/README.md
- security-products/sast/blob/master/docs/analyzers.md

Resolve "Update email address on How to reset your root password docs"

Closes #64768

See merge request gitlab-org/gitlab-ce!30926

Fix unordered list spacing (part 2)

See merge request gitlab-org/gitlab-ce!30796

Correct the spacing of unordered markdown lists
in docs, to maintain standards of documentation,
in /user and others.

Standardize page objects use on CE Plan tests

See merge request gitlab-org/gitlab-ce!30962

Wiki Usage Ping for Create SMAU

See merge request gitlab-org/gitlab-ce!30864

This adds a counter to count page creation, which is reflected in the
usage-data we collect.

The number created is stored in Redis, avoiding DB access.

This is a first iteration to address the following issue:
https://gitlab.com/gitlab-org/quality/team-tasks/issues/168

Note: depends on
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30945

Refactor collapse issue comments end-to-end test

See merge request gitlab-org/gitlab-ce!30902

Refactor create issue end-to-end test

See merge request gitlab-org/gitlab-ce!30945

Fixes typo in developer documentation

See merge request gitlab-org/gitlab-ce!30964

Fix the project auto devops API

See merge request gitlab-org/gitlab-ce!30946

If `project_auto_devops.enabled` is nil for a project, when setting any
auto devops values via the API, we try to create a new row in the DB,
instead of re-using the existing one. This leads to the project_id
being set to nil, and the database `NOT NULL` constraint leading to a
500 response.

This commit resolves the issue by correctly detecting the presence of a
ProjectAutoDevops row and re-using it. Persistence is also moved away
from explicit `update!` calls and into relying on `autosave: true` on
the model.

Import Non-EE JavaScript for Clusters Detail Page

See merge request gitlab-org/gitlab-ee!14749

Fix Gitaly auto-detection caching

Closes #64802

See merge request gitlab-org/gitlab-ce!30954

Remove duplicate buttons

Closes #64160

See merge request gitlab-org/gitlab-ce!30757

Document database review process

See merge request gitlab-org/gitlab-ce!30405

See https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/6069

Get rid of `worker_label` in RubySampler

See merge request gitlab-org/gitlab-ce!30942