-Updated ambient_generics in accordance to new music filenames
-Fixed a clipping issue above the generator room
-Generator room door now actually locks behind you instead of just looking like it does
-Fixed ending trolley switching to user control upon pressing the use key

-Zombies in starting area now have the attention span of a brick and will leave you alone if you exit the room
-Fixed music in generator room not fading out upon exiting
-Combat music no longer restarts if you don't get through the final section fast enough