Update v02a-c:

+ Scale up Jimmy's health by 2000 for each additional Survivor. Still 9001 health if 4.

+ Restore server's custom "z_common_limit" instead of forcing it back to vanilla 30.

+ Restore server's custom "z_common_limit" on reset, otherwise it'll remain at 0.

+ Re-added a wrongway sign at the exit Jimmy escapes through.

+ Stats crawl is only removed if Survivors fail to kill Jimmy (fixing the empty ending).