Update v.0.44

Update v.0.44

• Bug fixed: Shooting traces not working correctly
• Bug fixed: Leaderboard not sorting correctly
• Bug fixed: Certain (default) buildings in "free battle" mode could be destroyed
• Bug fixed: Uploading wrong score to the "Zombie-Wave" leaderboard
• Bug fixed: AI tried to spawn buildings even tho the construction worker died
• Bug fixed: Enemies not disappearing during the tutorial scene
• Bug fixed: Unable to place the watch-tower
• Bug fixed: Unit drop box selection displaying during "building-mode"
• Bug fixed: Unable to place wooden fences (sometimes)
• Bug fixed: Units destroyed own buildings (after mass placing them)
• Crash fixed: Trying to place a "tank supply box" resulted in crash
• Coding improved: Minimal performance gain