Real ruble economy v1.4

Real ruble economy
- Changed fuel prices in all countries
— Adjusted prices on ferries
- The economy is as close as possible to the real one
— To earn, will have to work hard
- Garage price: 3000000, garage improvement: 1500000
- The price of trucks is close to the real, increased the size of the loan to 90mln
— Reduced damage to the truck
- Fixed trailer Parking: difficult now gives more XP than simple

Version 1.4 for Euro Truck Simulator 2 (v1.32.x - 1.36.x):
- Added compatibility with new versions of the game
- Added Man TGX Euro6 cost
- Fixed Mercedes tuning pack bug