Add Requirements user documentation

See merge request gitlab-org/gitlab!29562

Adds Requirements feature documentation under
user docs.

Notify new merge Request conflicts only once

See merge request gitlab-org/gitlab!28498

Add requirements to permissions doc

See merge request gitlab-org/gitlab!29145

Add InvalidContentMessage and associated spec

See merge request gitlab-org/gitlab!28691

Refactor push rules v2

See merge request gitlab-org/gitlab!28286

Prepare `...Group::Treesaver` to ndjson

See merge request gitlab-org/gitlab!29576

Recover the Jira page version from review

See merge request gitlab-org/gitlab!29586

Remove Jasmine leftovers in EE tests

Closes #12322

See merge request gitlab-org/gitlab!29518

Replace Jasmine globals with Jest equivalents and
disallow further usage of Jasmine global in Jest specs.

Update link to feature flag docs

See merge request gitlab-org/gitlab!29253

Docs: convert reference links to standard links

See merge request gitlab-org/gitlab!29189

Docker expiration policies wire application settings

See merge request gitlab-org/gitlab!28640

- state
- actions
- getters
- mutations

Nuget search: fix the prerelease filtering

See merge request gitlab-org/gitlab!29482

In particular, for packages that have release and pre release versions.

Docs: Add repost for Support note

See merge request gitlab-org/gitlab!28976

Add documetation on Jira issues import MVC

See merge request gitlab-org/gitlab!29480

Introduce rate limit for creating issues via API

See merge request gitlab-org/gitlab!28130

Use music icon for files with .ogg extension

See merge request gitlab-org/gitlab!29514

Fix broken links in some Instance-level integrations

See merge request gitlab-org/gitlab!27298

The Static Site Editor component leverages this dumb component
to communicate to the user that an invalid file type (non-markdown)
is attempting to be used, additionally added corresponding
localization update

Protect sidekiq admin UI with admin mode

Closes #209048

See merge request gitlab-org/gitlab!28164

Document Jira issues import feature flow.

Restrict page access when visibility is restricted to Public

See merge request gitlab-org/gitlab!22522

Some organizations prefer to have all Gitlab related data private
but it is currently possible for non-authenticated users to access
certain pages e.g /public and /explore

This change makes it possible to restrict access by
checking if `public` is included in the restricted visibility
level setting.

* require authentication for /explore, /help, and /public for non-authenticated users.
* remove the Explore link from the sign in page.
* redirect an unauthenticated user attempting to access /help to https://docs.gitlab.com/.

Fix custom metrics dashboard when max_value is set

Closes #214360

See merge request gitlab-org/gitlab!29517

PanelIdInserter stage in dashbaord processing should be prepared to
greacefully handle unknown, wrong dashboard panle attributes,
with out breaking whole breaking whole dashboard. In order to that
we are going to rescue error and silently pass them back to Sentry,
while skipping PanelIdInserter stage for malformed dashboard.

Deprecate "token" attribute from Runners API

See merge request gitlab-org/gitlab!29481

It will be removed by 13.0

Renaming `Gitlab::ImportExport::Group::Treesaver` to
`Gitlab::ImportExport::Group::LegacyTreesaver` is part of the effort
to enable `ndjson` on the Group Import/Export feature.
With `ndjson` enabled all the structure of saving a group-tree is
different, so to make the maintenance easier the "non-ndjson"
structure is being renamed.

Correct Release evidence feature flag documentation

Closes #213132

See merge request gitlab-org/gitlab!29269

Add ability to add comments to vulnerability state history entries

See merge request gitlab-org/gitlab!29126

Use note header component in event item component

See merge request gitlab-org/gitlab!29437