* upstream/master: (126 commits)
  Allow to search for user by secondary email address in the admin interface
  Rename :name search parameter to :search_query at /admin/users
  Fix project features default values
  Add a link to the Issue Boards API in main README
  Fix Markdown styling inside reference links
  Fix relative links in Markdown wiki when displayed in "Project" tab
  Flexbox webkit prefixes
  Tests update
  Tests update
  Changed where merge request link is
  New todos blank state
  Implement CreateMembers service to make controller thin
  Do not show tooltip for active element (!7105)
  Update CHANGELOG
  Assign local_assigns[:subject] to a variable on the shared label partial
  Use select instead of pluck on Project.group_ids
  Skip authorization check when searching for labels on IssuableFinder
  Use label subject to calculate number of issues/mrs within the group
  Remove unnecessary includes(:priorities) on Projects::LabelsController
  Add 8.13.2 CHANGELOG entries
  ...