Enhancement : Async notifications

[alexwykoff]

Problem : Current invitations are timing out too rapidly and this is causing issues during demonstrations and internal team use.

Solutions :

• [ ] Allow for async invitations without short-term timeouts
  • [ ] Inviter can close the invitation dialog and invitations remain valid
• [ ] When an invitation code is redeemed, send a notification to the inviter
  • [ ] On click, reopen the invitation dialog
  • [ ] Highlight the relevant pin code
• [ ] Persistent notification badge on share icon (start with a red dot)