Slight performance improvements, new door logic, better lighting and cubemaps

Hugely improved performance, removed the automatic reactor shutdown due to issues with the logic and optimized a lot of textures and models

Fixed the train being able to be called at any time (even when already in motion) resulting in people sometimes being teleported into the tunnel without the train

General optimization improvement, camera screen fix and fix for elevators not being able to be called from the bottom floor

Added the sounds manually as they seemed to be rarely working. Honestly don't know how you lot missed that