Merge branch '208262-follow-up-from-add-unscanned-projects-vuex-module-move-helper-into-shared-utils-folder' into 'master'

Add "isValidDate" function to date-utils

Closes #208262

See merge request gitlab-org/gitlab!26461

Improve migration docs around parallelization

See merge request gitlab-org/gitlab!26876

Status page settings

See merge request gitlab-org/gitlab!25820

Resolve "Start code review on assigning a MR to someone other than the author"

Closes #205597

See merge request gitlab-org/gitlab!26891

Replace underscore for lodash in mr_widget

Closes #196680

See merge request gitlab-org/gitlab!26814

Fix overflow:ellipsis for groups list

See merge request gitlab-org/gitlab!26807

Improve documentation around triggering pipelines

See merge request gitlab-org/gitlab!26880

Add link to community forum for migration guide

See merge request gitlab-org/gitlab!26882

Change introduction wording

See merge request gitlab-org/gitlab!26916

Add "GitLab for Jenkins Users" context to migration doc

See merge request gitlab-org/gitlab!26893

API endpoint to list deploy tokens in a group

See merge request gitlab-org/gitlab!25219

Upgrade ActiveSupport in QA

See merge request gitlab-org/gitlab!26752

Fix docs-lint job that was missing half the docs

See merge request gitlab-org/gitlab!26951

Partly support `monaco-editor` in Jest

See merge request gitlab-org/gitlab!26396

Bump Auto Deploy image to v0.12.1

See merge request gitlab-org/gitlab!26336

Added mention of EDU and OSS programs

See merge request gitlab-org/gitlab!26637

Update snippets test to ignore visibility case

Closes #209928

See merge request gitlab-org/gitlab!26933

It just needed an update so there's no need to monitor it
in quarantine.

Change capybara screenshots files names

See merge request gitlab-org/gitlab!26788

This MR updates our screenshots files names taken on test failures:
- Remove timestamps
- Use RSpec full_description method instead of the file_path

Two new backwards compatible features:

- Allow replicas to be set to zero
- Add option to install and use postgres chart 8.2.1

Add docs on how to use the postgres chart 8.2.1 to be able to deploy to
a Kubernetes 1.16+ cluster.

This matches the version we use in Rails

Enable license compliance for local intalls

See merge request gitlab-org/gitlab!26770

* Default feature flag to true

Add changelog

Geo docs: Update data type limitations

See merge request gitlab-org/gitlab!26816

Optimize mirrored project counters with pipelines enabled

See merge request gitlab-org/gitlab!26802

- needed for failing counters on .com due
  to long queries

Clarify that subgroups can have a maximum ancestry of 21

See merge request gitlab-org/gitlab!26829

Add WAF anomaly aggregation queries

See merge request gitlab-org/gitlab!24837

GraphQL: Migrate from the TimeoutMiddleware to the Timeout plugin

See merge request gitlab-org/gitlab!26822