Organization support

[vijay-prema]

We need org support both at the nanopub level (publish verified membership status as NP) AND at the application level (authentication and billing), and keep both in sync.

• App-level orgs and membership

  • Roles - admin, member
  • Invites
  • Display memberships in profile
  • Allow users to create/edit orgs themselves (feature exists but disabled currently)
  • Billing

• Hooks to sync app DB to nanopub network

  • Membership changes
  • Role changes
  • Org name changes
  • Creation/deletion of org