Lots of changes adding a games-list view to the app from which you
create new games, open and delete existing ones, etc. There's still
plenty that's unimplemented, but it's already more useful for testing
and development. Which is the point.
up new error messages and then conns dialog so user can connect again
after changing room name or just waiting. A new game is started so
that comms is re-inited and will try again to connect to relay.
possible to start without specifying comms params, to switch roles
and/or number of players when starting new game; clean up dialogs,
esp. use notebook widget to have tab switch between comms types.
