Merge commit '2be34630' into backstage/gb/rename-ci-cd-processing-sidekiq-queues

* commit '2be34630':
  Common Docker Documentation Location in `gitlab-ce`
  fix deprecation warning present during webpack compiles
  Enable 5 lines of Sidekiq backtrace lines to aid in debugging
  Add support for copying permalink to notes via more actions dropdown
  Handle creating a nested group on MySQL correctly
  Decrease statuses batch size even more in a migration
  Fix repo editor scrollbar
  Replace 'source/search_code.feature' spinach test with an rspec analog
  Authorizations regarding OAuth - style confirmation
  Update README.md
  Refactor complicated API group finding rules into GroupsFinder
  Fix group and project search for anonymous users
  Document version Group Milestones API introduced
  Allow v4 API GET requests for groups to be unauthenticated
  Adjust a range and a size in stages statuses migration
  Update README.md
  Point to /developers on docs/administration/authentiq.md
  Indexes GFM markdown guide
  use inline links instead of referenced
  Add index on ci_runners.contacted_at