Add classList polyfill for IE classList.toggle(.., force) -- EE merge edition

Closes gitlab-ce#38916

See merge request gitlab-org/gitlab-ee!3527

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/38916

ProtectedBranch API includes user_id/group_id in access levels

Closes #4152

See merge request gitlab-org/gitlab-ee!3535

EE: Move identical merged branch check to merged_branch_names

See merge request gitlab-org/gitlab-ee!3533

EE port of fix-mermaid-import

See merge request gitlab-org/gitlab-ee!3531

Clarify firewall test and fix postgresql test command

Closes #4150

See merge request gitlab-org/gitlab-ee!3538

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/4152

[EE] Allow password authentication to be disabled entirely

See merge request gitlab-org/gitlab-ee!3475

Update example configuration to use HA roles for Redis and sentinel

See merge request gitlab-org/gitlab-ee!3532

Cross link default branch docs to issue closing pattern docs

See merge request gitlab-org/gitlab-ee!3517

Fix the redirect location wording

Closes gitlab-com/gitlab-docs#142

See merge request gitlab-org/gitlab-ee!3534

Port of 32098-environments-reusable

See merge request gitlab-org/gitlab-ee!3503

Closes https://gitlab.com/gitlab-com/gitlab-docs/issues/142

Account shared runner minutes to top-level namespace

Closes #3564

See merge request gitlab-org/gitlab-ee!3262

Updated FE Babel Libraries (EE Port)

See merge request gitlab-org/gitlab-ee!3519

Change reference to SSH instructions and page and remove next steps

See merge request gitlab-org/gitlab-ee!3529

Rename the after setup page and update links to it

See merge request gitlab-org/gitlab-ee!3528

[ci skip]

[ci skip]

Resolve "Upgrade axios from 0.16.2 to 0.17.1" (EE Port)

See merge request gitlab-org/gitlab-ee!3518

Fix broken test

 Add end to end test for endpoint and folder name changes

Improve e2e test to use dot in folder name

Fix broken test

CE Upstream - Monday

Closes #4056 and gitlab-qa#113

See merge request gitlab-org/gitlab-ee!3470

Change example for push rules to match comments.

See merge request gitlab-org/gitlab-ee!3508

Signed-off-by: Rémy Coutable <remy@rymai.me>

In the PG HA docs tell the user they can skip ahead if they need to

Closes gitlab-org/build/team-tasks#63

See merge request gitlab-org/gitlab-ee!3515

At the end of the `Ensure GitLab is running` step, the user should have
a working setup and may be done with the guided tour.  It may be the
user has a problem, so instead needs to jump ahead to troubleshooting,
but the current structure is:

* Required information
* Initial node configuration
  * Consul
  * Database
  * Pgbouncer
  * Application
* Node post configuration
  * Consul
  * Database
  * Pgbouncer
  * Application
* Failover
* Restore
* Alternative configuration
* Troubleshooting

Here we just add a link to the end of 'Node post configuration / Application', rather than restructure.