* upstream/master: (467 commits)
  Update docs board features tier
  Upgrade grape-path-helpers to 1.0.6
  Remove healthchecks from prometheus endpoint
  Fix find_branch call sites
  Ensure Encoding.default_external is set to UTF-8 when running QA scenarios
  i18n: externalize strings from 'app/views/admin/groups'
  Backport mr widget changes from EE
  Allow to toggle notifications for issues due soon
  Vuex test helper improvements
  whitespace
  Make more ref RPC's mandatory
  Resolve "Improve performance of MR Changes tab: reduce event listeners on scroll event"
  Remove old service architecture from Vue docs
  Adding spec to test basic forking functionalities
  Fix performance problem of accessing tag list for projects api endpoints
  typo
  Add sleep to QA test before installing tiller
  Include Vue files that are not covered by tests in test coverage
  Remove Repository#path memoization
  Resolve "do not set updated_at when creating note"
  ...