Merge remote-tracking branch 'upstream/master' into show-status-from-branch

* upstream/master: (67 commits)
  Stop unauthized users dragging on issue boards
  Capitalize Git
  Add docker-compose environment initialization command
  Improve readability and add specs for label filtering
  Improve label filtering implementation
  Allow the use of params[:name] when filtering labels
  Fix Rubocop offenses in issue move specs
  Add spec in Issues::MoveService to fix label assignment regression
  Fix bug where labels would be assigned to issues that were moved
  Fix `User#to_reference`
  Fix rubocop build error
  Remove redundant class_name and foreign_key overrides
  Enable SingleLinePerSelector in scss-lint
  Escape ref and path for relative links (!6050)
  Add failing test for #21420
  Enable SpaceAfterVariableColon in scss-lint
  Enable SpaceAroundOperator in scss-lint
  Enable trailingWhitespace in scss-lint
  Disable Rails/Output cop since it makes no sense here
  Use File.write instead of File.open + File#write
  ...