Merge branch '283966-follow-up-from-split-pipelines-for-merged-results-and-merge-train-check-boxes' into 'master'

Resolve "Follow-up from "Split  "Pipelines for merged results" and "Merge Train" check boxes""

See merge request gitlab-org/gitlab!49759

Allow admins to update settings in maintenance mode

See merge request gitlab-org/gitlab!49765

- allow application settings api endpoint to pass
through read-only middleware

Remove HTML markup from table

See merge request gitlab-org/gitlab!50077

Update lint query with connections

See merge request gitlab-org/gitlab!49983

Remove outdated packages workflow doc

See merge request gitlab-org/gitlab!49978

The HTML markup in the table didn't render properly on /help, and
it also caused Kramdown warnings.

Add expires_at param to GroupMemberBuilder data

See merge request gitlab-org/gitlab!49981

Docs: Add paragraph highlighting support constraints for scaled architectures

See merge request gitlab-org/gitlab!50048

Fix single-index invocation

See merge request gitlab-org/gitlab!50061

- Fix single-index invocation
- Add console logging

Add documentation for the rack-attack dry run mode

See merge request gitlab-org/gitlab!49945

Fix kwargs deprecation warnings for Ruby 2.7

See merge request gitlab-org/gitlab!49590

Add snippet on how to export a project to GitLab Rails Console Cheat Sheet

See merge request gitlab-org/gitlab!50000

We are reverting the lint query back to using connections
so that we can have more flexibility and coherenec on the FE. We
also let apollo handle the unwrapping of the nodes so that all
children components can know their data is already in the right format.

Use GitLab fork of tributejs and add autocomplete loading menu

See merge request gitlab-org/gitlab!49490

Fix typo in alert integration docs

See merge request gitlab-org/gitlab!50012

Enable feature flag ci_cross_pipeline_artifacts_download

See merge request gitlab-org/gitlab!49837

Set feature flag to be enabled by default and add documentation.

Remove more future tense from documentation

See merge request gitlab-org/gitlab!49921

Clarify on database review requirements

See merge request gitlab-org/gitlab!50053

GitLab.com users without password must contact to delete account

See merge request gitlab-org/gitlab!49626

Fix subpath in jira issue list feature

See merge request gitlab-org/gitlab!49623

The Jira client doesn't automatically add the subpath
like http://jira.example.com/subpath when executing custom
Jira requests.

Remove save_issuable_health_status feature flag

See merge request gitlab-org/gitlab!49743

Remove save_issuable_health_status feature flag now that it has
been defaulted to on for a while with no major issues

Use `issuable_show` for requirement show & create

See merge request gitlab-org/gitlab!48325

Created at to expires at

Update time stamp

Group migration - Import one group - frontend

See merge request gitlab-org/gitlab!49709

Remove mention of projects from segments

See merge request gitlab-org/gitlab!50017

Add sort by blocking to docs

See merge request gitlab-org/gitlab!50055

Change the unique index on `security_findings` table

See merge request gitlab-org/gitlab!50046

Require GitLab.com users to contact support for account deletion
when they do not have a local password set. For example, when
they created their account via OAuth sign-in. This ensures
we are able to verify ownership/identity prior to deletion.

Add feature flags internal usage staheolders to the blueprint

See merge request gitlab-org/gitlab!50047

Add skeleton loader to Analytics -> CI/CD page

See merge request gitlab-org/gitlab!49760