A few hotfixes, and testing better a theorically collision detection — PropFight Steam update #345410

- Fix powerup effects being given to only one player - Fix some bug where death effects would have improper positionning - Fix a bug that would make killscreens with physics objects behave improperly (fixes Blackhole) - Fix the camera scaling not being the same with different level zooms - Slightly enlarge the 'Eater' killscreen - Slow objects in 'Spawner11' I now use continuous CD (collision detection) on props and some other physics objects, this should make the game run slightly slower (theorically, but I didn't notice it yet), but make collision detection slightly better. On that note: - Nerf deagle/kalashnikov bullets since collision detection was buffed Also the game should now have a proper Nintendo Switch Pro Controller config