CMS: Stat committee meeting

[pamfilos]

• Reviews
  • display nested reviews/commnets (e.g add parent )
  • add dates (backend, UI)
  • on review (create/answer/delete/resolve/action) send email to users (reviewers, creator, admins ? - maybe has as a config)
• Deploy latest UI on Prod
• Collection README: provide admin access for editing to cms-stats schema
• Create new "CMS ML Questionnaire" in TEST instance for discussions