- Make onBlur reset the EditText to show that it hasn't submitted it.
- Add the user ID of the logged in user to Advanced.
- Remove remnants of the Save/Cancel buttons.
- 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.
