* upstream/master: (116 commits)
  adds impersonator variable and makes sudo usage overall more clear
  Reenables /user API request to return private-token if user is admin and requested with sudo
  Fix Backup::Manager#remove_old
  Allow public access to some Tag API endpoints
  Update outdated visible content spec descriptions
  Grapify the issues API
  new DevOps report, 404s, typos
  Remove dashboard.scss
  Update custom_hooks.md for global custom hooks and chained hook info
  Move admin hooks spinach to rspec
  Move admin logs spinach test to rspec
  Fix 404 error when visit group label edit page
  A simpler implementation of finding a merge request
  Encourage bug reporters to mention if they use GitLab.com [ci skip]
  Bump gitlab-shell version to 4.0.3
  Remove confirmation.scss
  Explain "js: true" in "deleted_source_branch_spec.rb" [ci skip]
  Move award emojis to framwork
  Move image styles to framework
  Remove tags.scss
  ...