Enables frozen string for all remaining files
in lib/gitlab/ci.

Partially addresses #47424.

Fix structure and add  notification level

See merge request gitlab-org/gitlab-ce!22528

Enable some frozen string for lib/gitlab/ci

See merge request gitlab-org/gitlab-ce!22636

Fix application layout form description

See merge request gitlab-org/gitlab-ce!22658

Resolve "Create new group: Rename form fields and update UI"

Closes #50962

See merge request gitlab-org/gitlab-ce!22418

Fix search "all in GitLab" not working with relative URLs

Closes #53259

See merge request gitlab-org/gitlab-ce!22644

Adds missing i18n to pipelines table

See merge request gitlab-org/gitlab-ce!22690

Resolve "Empty list for links to changed pages in Review App from MR Widget"

Closes #53227

See merge request gitlab-org/gitlab-ce!22665

Enhance performance of counting local LFS objects

Closes gitlab-ee#6067

See merge request gitlab-org/gitlab-ce!22143

Add dynamic timer for delayed jobs in pipelines list

See merge request gitlab-org/gitlab-ce!22621

Backport ee 7203 sticky logs topbar

See merge request gitlab-org/gitlab-ce!22282

Fixes diff discussions not being fully removed

Closes #53317

See merge request gitlab-org/gitlab-ce!22680

Fix extra merge request versions created from forked merge requests

Closes #53153

See merge request gitlab-org/gitlab-ce!22611

Wait for push before checking for new commit

Closes gitlab-org/quality/staging#14

See merge request gitlab-org/gitlab-ce!22633

When a deployment has no files to show in the dropdown we
fallback to the regular single button for the review app link.

This commit moves the review app link into a component since it's
used twice.

This fixes a bug where a discussion on a none changed line
would not get fully removed and therefore leave the comment row
empty. This was caused by the discussiob being added
to the right when it shouldnt of been

This also fixes a very rare edge case where discussions would get added
twice to diff lines causing a Vue rendering warning

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/53317

Fix #53298 JupyterHub restarts should work without errors

Closes #53298

See merge request gitlab-org/gitlab-ce!22671

Fix Review Apps testing guide

See merge request gitlab-org/gitlab-ce!22670

Renaming Secret Variables in the codebase

Closes #49629

See merge request gitlab-org/gitlab-ce!22414

Adding tests for filtering activities/comments in issues

Closes #51889

See merge request gitlab-org/gitlab-ce!22564

Add an index to the `file_store` column on `lfs_objects`. This makes
counting local objects faster.

Also, there is no longer need to check for objects with `file_store`
being `NULL`. See
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18557

---

### Query plans

#### Before & with `NULL`

```
Aggregate  (cost=113495.96..113495.97 rows=1 width=8) (actual time=1691.394..1691.394 rows=1 loops=1)
  ->  Seq Scan on lfs_objects  (cost=0.00..106415.50 rows=2832186 width=0) (actual time=0.012..1312.488 rows=2852607 loops=1)
        Filter: ((file_store = 1) OR (file_store IS NULL))
        Rows Removed by Filter: 131
Planning time: 0.077 ms
Execution time: 1691.433 ms
```

#### Before, without `NULL`

```
Aggregate  (cost=113495.96..113495.97 rows=1 width=8) (actual time=856.423..856.424 rows=1 loops=1)
  ->  Seq Scan on lfs_objects  (cost=0.00..106415.50 rows=2832186 width=0) (actual time=0.012..672.181 rows=2852607 loops=1)
        Filter: (file_store = 1)
        Rows Removed by Filter: 131
Planning time: 0.128 ms
Execution time: 856.470 ms
```

#### After & with `NULL`

```
Aggregate  (cost=68819.95..68819.96 rows=1 width=8) (actual time=583.355..583.355 rows=1 loops=1)
  ->  Index Only Scan using index_lfs_objects_on_file_store on lfs_objects  (cost=0.43..61688.35 rows=2852643 width=0) (actual time=0.028..399.177 rows=2852607 loops=1)
        Filter: ((file_store = 1) OR (file_store IS NULL))
        Rows Removed by Filter: 131
        Heap Fetches: 867
Planning time: 0.096 ms
Execution time: 583.404 ms
```

#### After, without `NULL`

```
Aggregate  (cost=68817.29..68817.30 rows=1 width=8) (actual time=490.550..490.551 rows=1 loops=1)
  ->  Index Only Scan using index_lfs_objects_on_file_store on lfs_objects  (cost=0.43..61685.68 rows=2852643 width=0) (actual time=0.040..311.760 rows=2852607 loops=1)
        Index Cond: (file_store = 1)
        Heap Fetches: 831
Planning time: 0.294 ms
Execution time: 490.590 ms
```

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/6067

Fix problem with spec that showed up in EE merge

See merge request gitlab-org/gitlab-ce!22675

docs: Add deprecation notice for renamed licensed feature

See merge request gitlab-org/gitlab-ce!22575

Added a note about machine types

See merge request gitlab-org/gitlab-ce!22572

When a forked merge request was created with the same branch name as the
target name, MergeRequests::RefreshService would always create a new
diff even though nothing had changed. For example, on GitLab.com:

1. There were a number of merge requests in the gitlab-ce and www-gitlab-com
projects that had old merge requests from the community.
2. These merge requests originated from forked projects and used the
source branch master.
3. When someone pushed to master in the main repository, MergeRequests::RefreshService
would see that master matched the merge requests in question and generated a new
diff.
4. This led to an explosion of merge request diffs and slowed down the "Changes"
tab considerably.

This change alters MergeRequests::RefreshService so that it will only
refresh the diff if the merge request's source project and branch
match. Otherwise, the refresh will only happen if a pushed commit
contains a commit relevant to the existing merge request.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/53153

Update gitlab-ui to 1.9.0

See merge request gitlab-org/gitlab-ce!22632

Remove mousetrap-rails gem

Closes #53270

See merge request gitlab-org/gitlab-ce!22647