messages display now

and you can traverse the list, but cannot go up and down yet.  That should be simple, though, just make the joystick task modify the cursor.
Problems:  For some reason, the system clock in top left is screwing up characters.  Same with the message clock sorta.
Also need to make sure that upon deletion, the cursor points at something sane.
Make sure that return doesn't create a message all on its own.