A tow bar gets attached to the back of a vehicle and can be used for pulling another vehicle.
- fixed for vehicle type "woodCrusherTrailerDrivable"
- added value for brakeForce
- fixed with overwritten function, the nil value for function Attachable.getCanAIImplementContinueWork
- fixed with overwritten function for Attachable.getIsImplementChainLowered
- clean incorrect game values