[ci skip] Merge branch 'master' into 43770-change-clear-runners-cache-ujs-action-to-an-axios-request

* master: (68 commits)
  Upgrade Workhorse to 4.0.0
  naming things
  Update GitLab Pages to v0.7.0
  Minor fixes in API doc
  Use Project#full_name instead of name_with_namespace
  Fix tests not completely disabling Gitaly
  Move OperationService#UserRemoveBranch
  Move OperationService#UserCreateBranch
  Move CommitService#Languages to OPT_OUT
  Move RefService#CreateBranch to OPT_OUT
  Move RefService#DeleteBranch to OPT_OUT
  Move OperationService#UserRevert to OPT_OUT
  Move OperationService#UserAddTag to OPT_OUT
  Move CommitService::CommitPatch to OPT_OUT
  Change to Pacific Time Zone
  Merge branch 'pages-6-1-gitlab-10-5' into 'security-10-5'
  Merge branch 'sh-fix-otp-backup-invalidation-10-5' into 'security-10-5'
  Remove wrong assumption about Runners cache GC
  Add CommonMark markdown engine
  add nginx_status monitoring details
  ...

Update GitLab Pages to v0.7.0

See merge request gitlab-org/gitlab-ce!17603

Resolve "Make margin around dropdown dividers 4px"

Closes #39444

See merge request gitlab-org/gitlab-ce!17517

Reduce number of FindCommit calls from RefsController#logs_tree

Closes gitaly#1057

See merge request gitlab-org/gitlab-ce!17566

Fix a JS bug in the websocket terminal

See merge request gitlab-org/gitlab-ce!17470

Change to Pacific Time Zone

[ci skip]

See merge request gitlab-org/gitlab-ce!17600

Upgrade grpc gem to 1.10.0

See merge request gitlab-org/gitlab-ce!17575

 Conflicts:
   GITLAB_PAGES_VERSION

Upgrade Workhorse to 4.0.0

See merge request gitlab-org/gitlab-ce!17606

Resolve: Modal and banner designs for project label and project milestone promotion

Closes #41895

See merge request gitlab-org/gitlab-ce!17197

Minor fixes in API doc

See merge request gitlab-org/gitlab-ce!17602

Use Project#full_name instead of name_with_namespace

See merge request gitlab-org/gitlab-ce!17601

Make git push mandatory

See merge request gitlab-org/gitlab-ce!17565

Remove wrong assumption about Runners cache GC

See merge request gitlab-org/gitlab-ce!17598

Merge branch 'sh-fix-otp-backup-invalidation-10-5' into 'master'

See merge request gitlab/gitlabhq!2349

Move Ruby endpoints to OPT_OUT

See merge request gitlab-org/gitlab-ce!17561

Backport of "Geo: Ignore remote stored objects when calculating counts"

See merge request gitlab-org/gitlab-ce!17581

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Merge branch 'pages-6-1-gitlab-10-5' into 'master'

See merge request gitlab/gitlabhq!2350

add nginx_status monitoring details

See merge request gitlab-org/gitlab-ce!17596

Part of: gitlab-org/gitaly#476

Part of: gitlab-org/gitaly#476

Part of: gitlab-org/gitlab-ce!17561

Part of: gitlab-org/gitaly#540

Part of: gitlab-org/gitaly#546

Part of: gitlab-org/gitaly#779

Part of: gitlab-org/gitaly#541

Part of gitlab-org/gitaly#324

Use persisted/memoized value for MRs sha's instead of doing git lookups

See merge request gitlab-org/gitlab-ce!17555

Add discussion API

See merge request gitlab-org/gitlab-ce!17510

The freeze time remains the same when switching to PDT
(Daylight Saving Time), so it should be PT, not PST.

Resolve "Update language about version check in admin settings and docs"

Closes #43486

See merge request gitlab-org/gitlab-ce!17535

Add CommonMark markdown engine

See merge request gitlab-org/gitlab-ce!14835

Keep track of projects a user interacted with

Closes #43460

See merge request gitlab-org/gitlab-ce!17327