Fix:

• Waypoints checker for vehicles is less sensitive
• If vehicle is blocked by an obstacle he automatically resume his path
• Having multiple contracts can drop FPS
• Having multiple brew tanks cause a mess in the computer
• Empty inputs
• Brewer employees can operate yeast
• Dropped yeast cardboards, yeast bags and empty bottles are correctly spawned
• Displayed yeast cardboards, yeast bags and empty bottles in the hand of employees has been corrected