[Backport] EE's Burndown chart for group milestone common code

See merge request gitlab-org/gitlab-ce!18511

Expose Deploy Token info as environment variables to CI/CD jobs

Closes #44447

See merge request gitlab-org/gitlab-ce!18414

Fix users not seeing labels from private groups when being a member of a child project

Closes #45463

See merge request gitlab-org/gitlab-ce!18544

Fix docs typo in Validate the .gitlab-ci.yml

Closes #45688

See merge request gitlab-org/gitlab-ce!18552

Add Capybara debugging methods to docs

See merge request gitlab-org/gitlab-ce!18549

[ci skip]

Add changelog entry for updating doorkeeper

See merge request gitlab-org/gitlab-ce!18550

Update links to /ci/lint with a new project's ci/lint

Closes #45666

See merge request gitlab-org/gitlab-ce!18539

Resolve "Avatar URLs are wrong when using a CDN path and Object Storage"

Closes #44775

See merge request gitlab-org/gitlab-ce!18092

Update doorkeeper

Closes #45433 and #45647

See merge request gitlab-org/gitlab-ce!18543

https://gitlab.com/gitlab-org/gitlab-ce/issues/45433
and
https://github.com/doorkeeper-gem/doorkeeper/issues/1065

Resolve "Namespace factory is problematic"

Closes #42936

See merge request gitlab-org/gitlab-ce!18464

Resolve "Repository storages documentation URL moved"

Closes #45635

See merge request gitlab-org/gitlab-ce!18529

Resolve "Skip setup of gitlab-shell, gitaly, ... for specs that don't need it."

Closes #44713

See merge request gitlab-org/gitlab-ce!18074

Added missing note for P1 priority and updated links

See merge request gitlab-org/gitlab-ce!18491

fix revoke header on deploy token docs

See merge request gitlab-org/gitlab-ce!18527

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

Remove UJS actions from pipeline graph

Closes #37837

See merge request gitlab-org/gitlab-ce!18509

Runs prettier on some vue shared components

See merge request gitlab-org/gitlab-ce!18487

Prettify vue shared component & improve tests to match guidelines

See merge request gitlab-org/gitlab-ce!18485

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

Fix minor project import API doc typos

See merge request gitlab-org/gitlab-ce!18534

Moved committer and spec. Added some extra code to run hooks or not depending on the options

Closes #45594

See merge request gitlab-org/gitlab-ce!18504

Resolve "Make Auto DevOps settings first class"

Closes #43466

See merge request gitlab-org/gitlab-ce!18321

* master: (74 commits)
  Add changelog for 2fa filter in users api
  Add 2FA filter to users API for admins only
  Fix project creation for user endpoint bug
  Flowdock uses Gitaly, not Grit
  Add missing changelog type to docs
  Removes 'no job log' from trace action
  Fix missing namespace for some internal users
  Dedupe yarn dependencies
  Downgrade MySQL CI service from 8.0 to 5.7
  Atomic internal ids for all models
  Add documentation on how to configure Redis Sentinel by persistent class
  Update CHANGELOG.md for 10.7.0
  Update index.md
  Resolve "Text from the diff is showing within a table header inside the discussion after the discussion is resolved"
  Ignore ordering in IssueDueSchedulerWorker spec
  Don't include lfs_file_locks data in export bundle
  Documentation: Frontend Building Checklist
  Fix a documentation typo for GitLab pages
  Refactored activity calendar
  Add an API endpoint to download git repository snapshots
  ...