Fixes:
- For towns, the "has tavern" flag was not saved or loaded
- Outdoor roads were not saved or loaded
- For outdoor encounters, the "can't flee" and "forced" flags were not loaded, and "forced" was not saved
--> These two flags have also been separated in the code
- Fix boats being saved as horses
- Fix first boat/horse not saving property status in scenario map data
- Game finally supports boats that start outdoors... probably
