Merge branch 'master' into 5845-extract-ee-environments-files

* master: (69 commits)
  Calculating repository checksums executed by Gitaly
  Resolve "Expand API: Render an arbitrary Markdown document"
  Update EE > CE downgrade service removal steps
  Make stores export a createStore() which can be used in tests
  Simplify pattern lexeme fabrication and matcher
  Simplify untrusted regexp factory method
  Fix api_json.log not always reporting the right HTTP status code
  Move group lists css from framework/lists.scss to pages/groups.scss
  Resolve "Web IDE: Previewing Markdown in Firefox doesn’t show a scroll bar"
  Add Keyboard shortcuts for "Kubernetes" and "Environments"
  Move API group deletion to Sidekiq
  fix typos. add a reference to deliverable and stretch for design artifact
  fix / assigne username wrapping problem has been fixed
  Memoize Gitlab::Database.version
  Conditionally add Gitaly deprecation warnings based on ENV variable
  Bring CE-EE parity to app/services/milestones/base_service.rb
  Bring CE-EE parity to app/services/lfs/unlock_file_service.rb
  Fixes 500 error on /estimate BIG_VALUE
  Fix: Use case in-sensitive ordering by name for groups
  Fix group lists visual
  ...