New IARC rating added

Bug Fixes:
- Removed barrier from shield bath
- Added more barriers to prevent zombies from entering buildings
- Fixed Bike Spawner visibility
- Patched issue with HUD display not dismissing automatically
New:
- Added a farming mechanism to create cube parts
- Added support information

Bug Fixes
- The Zombies can now cross the road again lol

Added
- More purchasable items
- More fun weapons and consumables
- Cars with cow catchers!
- Motorbikes