* upstream/master: (109 commits)
  Update CI templates to include 9.1 templates
  Change spec folder to match the assets one
  Update style_guide_js.md
  Milestones documentation refactor
  Adds documentation entry: Don't user forEach, aim for code without side effects
  Move kube namespace section to the variables one
  Changed milestone.to_reference calls into milestone.title for the show, edit and top views
  Update move icon to match others
  Issue Title Show Focus Check On Load
  Update Kubernetes namespace documentation
  Store projects in metrics for email replies
  Refactor into .vue files
  Adds vue js example application and documentation
  Add ES lint support to identify poorly written Promises
  Update plantuml.md to add the actual link.
  Fixed wording
  Add metrics events for incoming emails
  Remove helpers assigned_issuables_count and cached_assigned_issuables_count
  Refactor into .vue files part 2
  Fix headings
  ...