ZETOR PACK

In this pack are gathered Zetor Crystal 150/160, Forterra HD 130/150 and Zetor Proxima Power 100/120 mods I have uploaded several months ago. Also some changes and improvements are made to the tractors:
- Added mirror shader, so now the mirrors looks fine
- Changed dirt texture on the Crystal hood
- Changed starting sound on Crystal
- Chanaged Proxima Power indoor camera and the dashboard was animated
- Changed lights to all models
- Fixed some issues with the emissive decals in the Crystal interior
- Many other small fixes and improvements
To the pack was added a bonus content: Zetor Major 80! I have converted and uploaded it some time ago, but now the model is completely rebuild and animated to match the rest of the models in the pack.