* master: (119 commits)
  [ci skip] Fix example commands to refer to the correct versions
  Use axios instead of jquery ajax for setCiStatusFavicon
  refactor groups controller to match EE
  Fix broken test
  Introduce a new QA::Gitlab::Page::Component::Dropzone class
  Gitaly Server info for admin panel
  Add note about being in the `qa` directory for `bin/qa` to work
  Remove N+1 queries with /projects/:project_id/{access_requests,members} API endpoints
  Fix not all events being shown in group dashboard
  Add support for PreReceiveError in UserMergeBranch RPC
  Migrate Git::Repository#delete_refs to Gitaly
  Replace $.get in render math with axios
  Move mr widget related links into a vue file
  Make those files as close as EE to reduce conflicts
  Don't assume postgresql in two initializers
  Move Repository#can_be_merged? to Gitlab::Git::Repository
  Remove brakeman from .codeclimate.yml since it's now covered by the sast CI job
  Update Nokogiri to 1.8.2
  Ignore conflicts in db/schema.rb in Gitlab::EeCompatCheck
  Remove Rugged exception in cache rescue
  ...