Added sub-nav to new group sidebar settings

Closes #35140

See merge request !12907

Fixed project members link not staying active

Closes gitlab-ee#2942

See merge request !12882

Promote visibility level helpers from Group to Namespace

Closes gitlab-ee#2950

See merge request !12910

move click handler to button. when on the icon it wasn't triggered in firefox

Closes #35164

See merge request !12905

Process scheduled background migrations as well

Closes #34951

See merge request !12787

Expire cached user IDs that can see the performance after 5 minutes

See merge request !12911

Simply re-raise an exception when it occurs, but guarantee that no
background migration is lost in the process.

Added cop to blacklist the use of hash indexes

See merge request !12869

If we don't expire the cached user IDs, the list of IDs would become
outdated when a new member is added, or when a member ios removed from
the allowed group.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Remove Repository#search_files

See merge request !12879

Fix label creation from new list for subgroup projects

Closes #35181

See merge request !12906

In EE, we make use of `namespace#public?` in projects. When the project is in a
personal namespace, this breaks as the `public?` helper isn't present.

Branch and tag refactors for Gitaly

See merge request !12872

Bump fog-core to 1.44.3 and fog providers' plugins to latest

Closes #35155

See merge request !12897

Introduce have_gitlab_http_status

Closes #34964

See merge request !12883

It also makes it possible to gracefully retry a migration in order to
avoid problems like deadlocks.

Closes #35140

Reduce padding on context header

Closes #35064

See merge request !12855

Add white background to context header avatar

See merge request !12857

Fix incorrect AWS ELB metrics.

Closes #35174

See merge request !12902

Update Google launcher details

[ci skip]

See merge request !12899

Fix wrong link to docs in docs styleguide

See merge request !12901

Update health check docs

See merge request !12794

Update issue-related docs

See merge request !12881

Refactor groups docs

See merge request !12888

Add subgroups limitations to Pages docs

Closes #34621

See merge request !12891

Update MR-related docs

See merge request !12875