Add index on namespaces lower(name) for UsersController#exists

Closes #41340

See merge request gitlab-org/gitlab-ce!16059

Explictly require Gitlab::Utils in ProjectFeaturesCompatibility

Closes #41390

See merge request gitlab-org/gitlab-ce!16107

Clarify Auto DevOps pipelines

See merge request gitlab-org/gitlab-ce!16106

Make webpack fail for missing exports

See merge request gitlab-org/gitlab-ce!16005

docs: fix a typo in LFS documentation

See merge request gitlab-org/gitlab-ce!16078

Fix prometheus arg in prometheus.yml

See merge request gitlab-org/gitlab-ce!16075

Replace the download, fork and resolve discussion in a new issue icons

See merge request gitlab-org/gitlab-ce!15436

Update Dependencies

See merge request gitlab-org/gitlab-ce!16073

[ci skip]

For some reason Rails does not require it automatically when invoked via
rake task which cause tasks like seed_fu fail
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Escape spaces to %20 rather than +

See merge request gitlab-org/gitlab-ce!16037

Last push event widget width for fixed layout #40268

See merge request gitlab-org/gitlab-ce!15862

Resolve "Bump Ruby to 2.3.6"

See merge request gitlab-org/gitlab-ce!16016

Update installation and upgrade guides to use Ruby 2.3.6

See merge request gitlab-org/gitlab-ce!16038

Do not show Vue pagination if only one page

Closes #33609

See merge request gitlab-org/gitlab-ce!15999

Added 'admin' persona

See merge request gitlab-org/gitlab-ce!15470

Docs: move article Artifactory + GL to subject-related folder

See merge request gitlab-org/gitlab-ce!16081

Fixed diff_worker not compiling correctly

Closes #41182

See merge request gitlab-org/gitlab-ce!15966

Refactor user, project and group docs when changing namespace

See merge request gitlab-org/gitlab-ce!16019

- move the section
- replace identifiers with inline links
- update settings (General settings > Advanced settings)

Skip projects filter on merge requests search

See merge request gitlab-org/gitlab-ce!15955

Properly name webpack chunks for dynamic imports

See merge request gitlab-org/gitlab-ce!16066

Reduce cardinality of some of GitLab's Prometheus metrics and fix observed duration reporting.

Closes #41045

See merge request gitlab-org/gitlab-ce!15881

Fall back to the `MergeRequestWidgetEntity`

Closes #41296

See merge request gitlab-org/gitlab-ce!16074

Resolve "Decouple multi-file editor from file list"

Closes #40040 and #40032

See merge request gitlab-org/gitlab-ce!15430

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