* upstream/master: (49 commits)
  Fire system hooks when a user is created via LDAP or OAuth
  Common Docker Documentation Location in `gitlab-ce`
  fix deprecation warning present during webpack compiles
  Enable 5 lines of Sidekiq backtrace lines to aid in debugging
  Add support for copying permalink to notes via more actions dropdown
  Docs: update - fix headers
  Handle creating a nested group on MySQL correctly
  Decrease statuses batch size even more in a migration
  Fix failure when issue author is nil
  Fix searching for files by path
  Fix invite by email address duplication
  Revert "Merge branch 'mk-reenable-mysql-tests-on-all-branches' into 'master'"
  Fix repo editor scrollbar
  Revert "Merge branch 'sh-sidekiq-backtrace' into 'master'"
  Replace 'source/search_code.feature' spinach test with an rspec analog
  Add missing third argument to `Git::Repository#initialize` in spec
  New doc: how to install GitLab on Azure
  Authorizations regarding OAuth - style confirmation
  Enable 5 lines of Sidekiq backtrace lines to aid in debugging
  Reenable MySQL tests on all branches
  ...