* upstream/master: (56 commits)
  Resolve "When changing project visibility setting, change other dropdowns automatically"
  change headings to improve SEO
  backports changed import logic from pull mirroring feature into CE
  Fix header component spec
  Add a Rake task to aid in rotating otp_key_base
  Remove unnecessary variable
  Add changelog entry
  Allow users to be hard-deleted from the admin user show page
  Allow users to be hard-removed from the admin users list page
  Support hard deletion in Admin::UsersController#destroy
  Add changelog entry
  Extract and memoize `user_access`
  Remove GitAccessStatus (no longer needed)
  Refactor construction of response
  Refactor to remove a special case
  Fix would-be regression
  Clarify error messages
  Refactor to let GitAccess errors bubble up
  Refactor to let `GitAccess` check protocol config
  Specify new Git-LFS-over-HTTP behavior
  ...