ST 180N v1.7.0.0

ST 180N v1.7.0.0 Update to version 1.7
Many thanks to everyone who pointed out my mistakes and shortcomings. I hope you like the new version;)

What's new:
- wheels fixed (double wheels already collide and make tracks)
- wipers repaired
- bucket capacity fixed (now 2500 liters)
- arm control reversed
- the front axle is now swinging
- the rear aprons move
- the activated part of the tell-tales on the deck
- stacker added

If you find any other error or deficiency, please write me in the comment.