https://gitlab.com/gitlab-org/gitlab/-/merge_requests/26454 implemented
the basic feature under a feature flag, this implements the backend
changes.

This is similar to the service templates feature that we are going to
remove https://gitlab.com/groups/gitlab-org/-/epics/2430. As for service
templates, we are not using the testing settings functionality because
is couple to project that we don't have in this context.

We will enable the testing settings functionality one-by-one
https://gitlab.com/gitlab-org/gitlab/-/issues/213138.

Only display mirrored URL to users who can manage Repository settings

See merge request gitlab-org/gitlab!27166

Update links to be inline in some dev docs

See merge request gitlab-org/gitlab!28634

Add epic confidentiality attribute and model validations

See merge request gitlab-org/gitlab!28428

Update copies from project to repositories

See merge request gitlab-org/gitlab!27986

Create token response should be CREATED

See merge request gitlab-org/gitlab!28587

Quarantine commit description test

See merge request gitlab-org/gitlab!28762

Policies and controllers for unlock membership to ldap for Groups

See merge request gitlab-org/gitlab!26520

Add a GraphQL based counts component

Closes #210346

See merge request gitlab-org/gitlab!28414

Converted GlButton to GlNewButton

See merge request gitlab-org/gitlab!28614

Avoid N+1 queries on Audit Events controllers

Closes #212839

See merge request gitlab-org/gitlab!28399

This reverts commit c6935b7b.

It adds confidentiality attribute to Epic model and also
adds validations which assure that confidential epic
can have only confidential issues.

test started failing again on master

In the section Repository storage inside the
Admin panel, we say several times projects. Nevertheless,
we have more objects that can have repositories,
not only projects.

We need to change the copies and remove any
reference to projects.

This controller will for now just handle the status change of
lock_membership_to_ldap

The change will check for unlock_membership_to_ldap and the instance
settings.

Fix styling of MR dropdown in Web IDE

See merge request gitlab-org/gitlab!28746

Documentation: Add troubleshooting section styleguide

See merge request gitlab-org/gitlab!28741

Refactor the component to support either GQL or Vuex

Do not generate subscriptions from plan_id

See merge request gitlab-org/gitlab!28453

To follow the guidelines for gitlab-ui components, converted the
old-style buttons to the new style

Fix structure.sql sort order

See merge request gitlab-org/gitlab!28635

Set props and listener in snippet_blob_edit.vue explicitely

Closes #213059

See merge request gitlab-org/gitlab!28719

Remove pipeline message duplicate spec

See merge request gitlab-org/gitlab!28664

Change summary text copy for license-compliance MR widget

See merge request gitlab-org/gitlab!28732

Remove invalid file containing javascript code

See merge request gitlab-org/gitlab!28753

[Part-3] Add pagination support in Requirements list

Closes #207981

See merge request gitlab-org/gitlab!28508

Enable Performance/ChainArrayAllocation cop for import/export module

Closes #209918

See merge request gitlab-org/gitlab!27799

Track import job id by import state model

See merge request gitlab-org/gitlab!28604

Add DB guideline about not disabling cops

See merge request gitlab-org/gitlab!28681

file_sha256 bytea put in abc order

To have props and listeners' assignemtn consistent in the component,
this branch sets value and listener on <blob-content-edit>
explicitely instead of implicitely via v-bind="$attrs" and
v-on="$listeners".

Allows the component to not have content passed to it by default
This is important for the cases when the component is used in
creation of a new snippet.

But only for the `import_export` module for now, where we know
this has been a problem before.

Also fixed the 3 problems it found.