- Swap Phases enum to be using string literals
- Swap roomId prop on UserSettings for a more sane onUserSettingsClose and
make MatrixChat responsible for swapping the room.
- s/then/done/ when terminating Promise chains to avoid subtle errors.
- Rejig render() of UserSettings so we don't need to indent quite so much.
This is preferable to doing the way other QPs are passed (secret, etc) because
the link in the email wants to look like "#/room/<room_id_or_alias>" for guest
read-access (only bouncing you to /login if that room is not readable by guests).
This is hard to do in the current arch because we don't preserve QPs on /room
paths, and we do conditional executions depending on if it is a room ID or
alias. Rather than threading through the email in each section and creating
a fragile mess, just pass the *starting* set of query parameters through to
MatrixChat which can then do the Right Thing when the time comes.
