Merge dev to prod

@DSASanFrancisco/portal-members

• Add unique constraint on (meeting_id, member_id) to attendees table
• Describe how to connect to the database locally in readme
• Prevent empty name or email from getting saved to db on meeting guest kiosk
• Set fields when creating a new meeting
• Edit start and end times on meetings
• Return the meeting list from the API in reverse ROWID order as an approximation of reverse chronological order
• Add test coverage