Fixes "New label" button hit miss

Closes gitlab-org/quality/nightly#59

See merge request gitlab-org/gitlab-ce!24487

Eliminate N+1 queries in /api/groups/:id

Closes #49845

See merge request gitlab-org/gitlab-ce!24513

Revert "Merge branch 'qa-use-mr-iid-in-review-app-slug' into 'master'"

See merge request gitlab-org/gitlab-ce!24521

Search project tags via API

Closes #54401

See merge request gitlab-org/gitlab-ce!24385

This reverts merge request
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/24388

Set ActionController raise_on_unfiltered_parameters to true

See merge request gitlab-org/gitlab-ce!24443

Bump the katex package to 0.10.0

See merge request gitlab-org/gitlab-ce!24478

add a note that GIT_STRATEGY is not supported for k8s executor

See merge request gitlab-org/gitlab-ce!23974

In https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/15475/diffs, a
significant amount of work went into eliminating N+1 queries in the
/api/groups/:id/projects endpoint. We can reuse the
`Entities::Project.prepare_relation` call on the projects.

In a group with 2,573 projects on GitLab.com, this change significantly
improves performance:

* 18019 SQL queries down to 21
* Time spent in DB: 70 s down to 384 ms

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/49845

Resolve "Remove `error_tracking` feature flag"

Closes #56213

See merge request gitlab-org/gitlab-ce!24306

Remove unwanted margin above suggested changes.

Closes #56389

See merge request gitlab-org/gitlab-ce!24419

Improvements for spec migration readme

See merge request gitlab-org/gitlab-ce!24440

Refer to https://github.com/KaTeX/KaTeX/pull/1700 for additional details.

Update vuex.md - swap PUT/POST methods

See merge request gitlab-org/gitlab-ce!24494

Fix Resource attribute bug

See merge request gitlab-org/gitlab-ce!24407

Update reference to ~Monitoring to be ~Monitor

See merge request gitlab-org/gitlab-ce!24489

Correct minimum yarn version in 11.6 -> 11.7 upgrade doc

Closes #56254

See merge request gitlab-org/gitlab-ce!24495

Cleanup stale +deleted repo paths on project removal (adjusts project removal bug)

Closes #46146

See merge request gitlab-org/gitlab-ce!24269

View epic permissions

See merge request gitlab-org/gitlab-ce!24483

Return the maximum group access level in the projects API

Closes #43684

See merge request gitlab-org/gitlab-ce!24403

1. When removing projects, we can end-up leaving the +deleted
repo path dirty and not successfully removing the non-deleted
namespace (mv process is not atomic and can be killed without
fully moving the path).

2. In order to solve that, we're adding a clean-up phase on
ensure which will schedule possible staled +deleted path deletion.
Note that we don't check the current state (if there is or not a
repo) in order to schedule the deletion. That's intentional
in order to leverage Gitlab::GitalyClient::NamespaceService#remove
idempotency and ensure consistency.

Add documentation for new NGINX Ingress metrics

Closes #56473

See merge request gitlab-org/gitlab-ce!24449

[EE Backport] Add notes filters for epics

See merge request gitlab-org/gitlab-ce!24372

Add flat-square badge style

Closes #30120

See merge request gitlab-org/gitlab-ce!24172

Use MR IID in Review Apps slug and domain

See merge request gitlab-org/gitlab-ce!24388

Merge branch '56328-frequent-items-initialisations-can-be-optimised-and-deferred-in-idlecallback' into 'master'

Resolve "Frequent Items Initialisations can be optimised and deferred in idleCallback"

Closes #56328

See merge request gitlab-org/gitlab-ce!24401

Avoid overwriting default jaeger values with nil

See merge request gitlab-org/gitlab-ce!24482