More CNW fixes/cleanups

- Trim bar to 76 characters (triggered by MORTAL.REF)
- If the player initial map can't be loaded, move to 0,0,0
- draw_map() can't auto-load the players map
  (ORACLE2.REF loads a map without the player on it)
- When we draw a new map, set last_draw to undefined
- If you move off the edge of a map into an undefined map, simply
  don't move (triggered by GLENDALE.REF)
- Move play on map *after* a REF is ran
  (and you're potentially moved back)