Small patch around the wonder unlock combat issues

1000 user reviews! So happy with that.. Thank you all.

To celebrate here's a small patch that has been simmering on beta.

• prevented turrets dropping below the world to be counted as alive.
  
• fixed a hole on the thunderstrike
  
• prevented combat around anomalies from being undecided/unfinished due to enemies being stuck underwater
  
• prevented combat around anomalies from being undecided/unfinished due to the battlegroup being stuck at exactly 0 health.
  
• prevented the turrets on freebooter units from being replaced with generic point defense weapons
  
• reduced the target leading to improve short range point-defense accuracy