Several Fixes for lairs

- Fixed staying in combat with a lair
- Fixed lairs spawning under ground
- Fixed vehicle spawn bug
- Fixed lair to spawn more waves
- Fixed data type error in calculation for lair damage
- Fixed some lairs not having health due to incorrect level
Merge remote-tracking branch 'origin/master' into LairFixes
Cleanup
Merge pull request #1211 from CharonInferar/LairFixes

Several Fixes for lairs