Bigbags XXL v1.0.1.0

Changelog 1.0.1.0:
Selection of different capacities, price adjustment, texture error fixed, silage, forage and woodchips added.

The big bags are filled with 4,000 l and have a slightly cheaper price:
Pig feed 4,000 l = 3000.- €
Chicken feed 4,000 l = 5000.- €
Horse feed 4,000 l = 4500.- €
Fertilizer 4,000 l = 6000.- €
Lime 4,000 l = 800.- €
Seed 4,000 l = 2,800.- €