* master: (68 commits)
  Last push event widget width for fixed layout
  Added 'admin' persona
  Docs: move article Artifactory + GL to subject-related folder
  Mention GitLab Pages when changing username
  Consolidate the docs when changing a repo path
  Add docs for automatic redirects when renaming namespaces
  move "Transfer an existing project into a group" to project docs
  Do not show Vue pagination if only one page
  Resolve "Decouple multi-file editor from file list"
  Update Ruby version to 2.3.6
  Skip projects filter on merge requests search
  Fall back to the `MergeRequestWidgetEntity`
  LDAP extern_uids are not normalized when updated via API
  organise content by subject
  Restore missing language code in datetime_utility.js
  Add support for defining explicit dependencies to QA factories
  Document mounting volumes with Docker-in-Docker
  add missing word to pawel-reduce_cardinality_of_prometheus_metrics.yml
  Use seconds where possible, and convert to milliseconds for Influxdb consumption
  update dispatcher to allow for dynamic imports until webpack plugin is updated
  ...

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>

When searching for merge requests, an additional subquery
is added which by default filters only merge requests which belong
to source or target project user has permission for.

This filter is not needed because more restrictive filter
which checks if user has permission for target project
is used in the query.

So unless a custom projects filter is used by user, it's possible
to skip the default projects filter and speed up the final query.

Related to #40540

organise content by subject

See merge request gitlab-org/gitlab-ce!16080

When no serializer was passed.

LDAP extern_uids are not normalized when updated via API

Closes #40279

See merge request gitlab-org/gitlab-ce!16004

Add CI YML example for Browser Performance Testing in CE

See merge request gitlab-org/gitlab-ce!16058

Resolve "Docker volumes not mounted when using docker:dind"

See merge request gitlab-org/gitlab-ce!16070

Restore missing language code in datetime_utility.js

Closes #41248

See merge request gitlab-org/gitlab-ce!16009

Remove two unused step definitions from spinach

See merge request gitlab-org/gitlab-ce!16047

Hide toolbar in markdown preview mode

Closes #40063

See merge request gitlab-org/gitlab-ce!15994