Hotfix demo.1.4

The final update for the demo, addressing a variety of feedback that was brought up.
Thanks for taking part in the demo and wishlist the game if you liked it!

• Fixed wrong 3D audio directionality
  
• Fixed town ponds blocking Line-of-Sight
  
  
• Added basic info on the dismount's weapons in the platoon status panel
  
• Fixed infantry casualty allocation - which resulted in squads losing MG & anti-tank launchers way too early into engagement
  
• Slightly adjusted infantry survivability in cover but outside entrenchments
  
• Added LAWs to assault engineers
  
  
• Adjusted map looks to look slightly less monotonous
  
• Adjusted the volume of several obnoxious sounds
  
  
• Optimized several CPU-hungry routines (not all, though)
  

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