* upstream/master: (133 commits)
  Restructure steps for MM slash commands service
  Add Changelog entry for CI linter validation fix
  Fix entry lookup in CI config inheritance rules
  Extend specs for global ci configuration entry
  Remove unnecessary require_relative calls from service classes
  Use single quote for strings
  Ue svg from SVGs object
  Dont trigger CI builds [ci skip]
  Revert "Test only migrations"
  Add custom copy for each empty stage
  Refactor Mattermost slash commands docs
  Fetch only one revision
  Highlight nav item on hover
  Test only migrations
  Fix migration paths tests
  Scroll CA stage panel on mobile
  Fix CSS declaration
  administer to administrator
  Move SVGs to JS objects for easy reuse
  Improve deploy command message
  ...