300: "my meetings" invitations

@DSASanFrancisco/portal-members

SUMMARY

These API changes support the following UX improvements:

• Add a section for “Invitations”`
  • Show meetings that the user has been invited to (but not accepted) in chronological order, with the next meeting to start at the top
• Allow the user to RSVP for the meeting
  • If the user RSVPs as “accepted”, move the meeting from “Invitations” to “Upcoming Meetings”
  • If the user RSVPs as “declined”, hide the meeting
    • Show a link to expand declined invitations

Read the commit messages for further detail 👍