Various little bugfixes and additions over the past couple of days:
- RCs should now show up if flying from home
- New racecourse - including improved Ostrich racing
- Bugfixes for the prize awarding of BongoGames ; more prizes will be available now, including on races and hornball games
- Some fixes to prevent invalid transactions - e.g. trying to sell more than you are currently carrying to a building
- Fixes and tidyups to the Export and Workhouse screens