* upstream/master: (39 commits)
  Improve build status specs contexts descriptions
  Add some missing tests for detailed status methods
  Remove trailing blank line from Allowable module
  Update manual build icon SVG
  Make it possible to mix `Gitlab::Routing` in
  Extract abilities checking module from ability model
  Extend tests for pipeline detailed status helpers
  Add tests for common build detailed status helpers
  Add missing tests for build `cancelable?` method
  Add tests for detailed build statuses factory
  Make it possible to retry build that was canceled
  Make build retryable only if complete and executed
  Improve readability in methods for detailed status
  Add tests for build cancelable/retryable statuses
  Extend specs for build play/stop detailed statuses
  Refine build stop/play extended status specs
  Use manual build icon in play/stop build statuses
  Adds manual action icon and case to show it
  Fix detailed status specs for pipeline stage model
  Fix detailed status badge for generic commit status
  ...