With the BatchLoader implementation in the
`Gitlab::Entities::IssuableEntity` it was not necessary anymore to
sent this object around.

This commit will restore the original `preload` solution for the
API::Entities::MergerequestBasic and only use the BatchLoader for the
`Gitlab::IssuableMetadata`.

With this change, whenever the Grape::Entity serializer is sent a list
of entities, all the associations that are batch loaded will be loaded
in a single SQL query.

Remove prepend-top-5 CSS class

See merge request gitlab-org/gitlab!32882

Remove tabindex where not needed

See merge request gitlab-org/gitlab!36168

Cleanup spec mock_data.js use

See merge request gitlab-org/gitlab!36243

Fixed out of date link to product permissions handbook entry

See merge request gitlab-org/gitlab!36348

Resolve "Replace fa-sticky-note-o icons with GitLab SVG document icon"

Closes #225959

See merge request gitlab-org/gitlab!36095

Delete Feature Flag Strategy Help Text About Default Behavior

See merge request gitlab-org/gitlab!35887

Fixes mixed-case anchors

See merge request gitlab-org/gitlab!36414

Minor improvements to the 2K reference architecture

See merge request gitlab-org/gitlab!36445

Add docs for metrics embeds in alerts

See merge request gitlab-org/gitlab!36247

Docs: Add access level header to members API documentation

Closes #220080

See merge request gitlab-org/gitlab!36375

Geo Settings Form - Validations and Save

See merge request gitlab-org/gitlab!35672

This MR is an attempt at MVC.

This MR hooks up the form validations
and PUT actions.  With this change,
it fully replaces the existing
functionality of the Rails/HAML form.

Following this form we can delete the legacy code
and remove the need of a feature flag.

Pin charts version to 4.1.3

See merge request gitlab-org/gitlab!36293

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

Migrate new board issue buttons to GlButton

Closes #219865

See merge request gitlab-org/gitlab!36357

Moves JobsHelper to CI namespace

See merge request gitlab-org/gitlab!35389

* Also moves EE

Delete unused karma code

See merge request gitlab-org/gitlab!36322

Update documentation about Kubernetes executor authentication

See merge request gitlab-org/gitlab!35427

Enable oj in Gitlab::Json

See merge request gitlab-org/gitlab!35527

Add avatar images for newly created Support Bot and Alert Bot

See merge request gitlab-org/gitlab!36269

This change adds custom avatars for
Alert and Support Bot.

Improve audit event instrumentation with in-memory queue

See merge request gitlab-org/gitlab!35938

Add health status and epics to bulk edit documentation

See merge request gitlab-org/gitlab!34200

Add epic attribute to list

Add links to introducing issues

Update screenshots

Alert metrics chart

See merge request gitlab-org/gitlab!35044

Updated Terraform Widget MR Image

See merge request gitlab-org/gitlab!36318

Fix spelling of Opsgenie

See merge request gitlab-org/gitlab!36437

Add docs about metrics dashboard application limits

Closes #14934

See merge request gitlab-org/gitlab!36052