Merge remote-tracking branch 'upstream/master' into qa-clone-with-deploy-key

* upstream/master: (69 commits)
  Change issue show page to group MRs by projects and namespaces
  Merge branch 'master-i18n' into 'master'
  Update sidekiq_style_guide.md
  Document all_queues.yml in sidekiq_style_guide.md
  Fix artifact creation
  Fix Error 500s creating merge requests with external issue tracker
  Addressed mr observations
  Clean new Flash() and stop disabling no-new (eslint) when possible
  Disable query limiting warnings for now on GitLab.com
  Dry up spec
  Add changelog entry
  Schedule PopulateUntrackedUploads if needed
  Fix orphan temp table untracked_files_for_uploads
  Fix last batch size equals max batch size error
  Revert "Merge branch 'rd-40552-gitlab-should-check-if-keys-are-valid-before-saving' into 'master'"
  Fix warning messages for promoting labels and milestones
  Fixed missing js selector for the realtime pipelines commit comp
  Reuse getter Add loading button for better UX
  Honour workhorse provided file name
  Fix a transient failure in db/post_migrate/20170717111152_cleanup_move_system_upload_folder_symlink.rb where symlink already exists
  ...