Hides pipeline duration in commit box when it is zero (nil)

Closes #32788

See merge request gitlab-org/gitlab-ce!14979

Clean up `new-sidebar`

See merge request gitlab-org/gitlab-ce!14978

Fix code review discussion action buttons

Closes #38891

See merge request gitlab-org/gitlab-ce!14801

Fix performance of sticky.js

Closes #39332

See merge request gitlab-org/gitlab-ce!14976

Remove Sherlock usage from the performance bar

Closes #39351

See merge request gitlab-org/gitlab-ce!15000

Changing the smallest of typos

See merge request gitlab-org/gitlab-ce!15022

Use the new buttons for creating groups and projects in QA tests

Closes #39349

See merge request gitlab-org/gitlab-ce!14997

Make pipelines table in MR view usable

See merge request gitlab-org/gitlab-ce!14941

Fix CSS in load more participants

Closes #39299

See merge request gitlab-org/gitlab-ce!15005

Refactor `have_http_status` into `have_gitlab_http_status` in the specs

Closes #35644

See merge request gitlab-org/gitlab-ce!14958

Simple docs fixes

See merge request gitlab-org/gitlab-ce!15001

Removes group_avatar & group_label_subscription from global namespace

See merge request gitlab-org/gitlab-ce!15006

Fix a small typo in the delete merged branches documentation

See merge request gitlab-org/gitlab-ce!15003

Fix the description of the new branch created by an issue's new branch button

See merge request gitlab-org/gitlab-ce!15004

Moves vue resource docs into a new file & add documentation to handle 204

Closes #39369

See merge request gitlab-org/gitlab-ce!15002

Backport EE changes to group routes

Closes gitlab-ee#3794

See merge request gitlab-org/gitlab-ce!14973

Only cache the push event for the fork-source when it exists

Closes #39352

See merge request gitlab-org/gitlab-ce!14989

Adds docs regarding handling 204 response

Sherlock::Query generates a backtrace on every call to "new", which is
very slow. Formatter queries are also not displayed properly due to the
lack of "white-space: pre" in the CSS. We took a look at fixing this,
but the produced output is not really better than just displaying
queries on one line.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/39351

Fix escaped text replacement

Closes #37724

See merge request gitlab-org/gitlab-ce!14193

Create new branch from dropdown.

Closes #38485

See merge request gitlab-org/gitlab-ce!14714

Show Gitaly data in the peek performance bar

Closes #39231

See merge request gitlab-org/gitlab-ce!14949

Closes #39332

Add loading button

See merge request gitlab-org/gitlab-ce!14883

Update using_docker_images.md

See merge request gitlab-org/gitlab-ce!14988

* master: (88 commits)
  Fix deletion of container registry or images returning an error
  The fog-aliyun gem had a bug in v0.1.0 for file storage creation/update. This merge requests update the gem to v0.2.0 which contains the fix:
  Decrease ABC threshold to 54.28
  Update VERSION to 10.2.0-pre
  Update CHANGELOG.md for 10.1.0
  Document `CI_SHARED_ENVIRONMENT` and `CI_DISPOSABLE_ENVIRONMENT`
  Fix the external URLs generated for online view of HTML artifacts
  Use title as placeholder instead of issue title for reusability
  Fix failure in current_settings_spec.rb
  Clarify the difference between project_update and project_rename
  URI decode Page-Title header to preserve UTF-8 characters
  Update Gitaly version to v0.49.0
  Decrease Perceived Complexity threshold to 14
  Resolve "Remove help text regarding group issues on group issues page (and group merge requests page)"
  Force non diff resolved discussion to display when collapse toggled
  Added submodule support in multi-file editor
  add note about after_script being run separately
  Check for element before evaluate_script
  Merge branch 'master-i18n' into 'master'
  Update Prometheus gem to fix problems with other files overwriting current file
  ...