Fourth hotfix for 0.13 released

More fixes/improvements as we work on the next regular update.
General:
- Force Feedback: response is more immediate now, self-steering improved
Note: We would be happy to hear your feedback about these recent force feedback changes, please let us know if you have any issues, configuration tips, etc.
Fixes:
- Fixed crash with some vehicle's stock colors
- Fixed crash when first vehicle spawned is removed but other vehicles share sounds with it
- Fixed trailer's reset logic affecting non trailer vehicles