fix stage4 escape rotating lift spinning for too long (real this time)

fix stage4 escape rotating lift spinning for too long
attempt a fix for stage4 ramp bugs on boostpads

fix sky texture (vis still broken)

fix wrongly uploaded vpk (was testing VIS, still broken...)

fix unlitgeneric flameberge texture not being visible

attempt to fix freezing coffin not killing
slightly increased after-boss stage4 updraft push strength

added scoreboard score each item pickup to indicate item levels (via cs2fixes)
adjust zm particle brightness
particle timing adjustments
buffed human wind push strength slightly
made sure cubemap fog displays properly
fix missing footstep sounds on some props
fix zombies teleporting too fast after stage4 boss
fix humans being able to stand above the stage4 boss

lowered the volume of some sounds
increased tidal wave push strength slightly
made stage5 lava teleport players under it
fixed overlays
other misc changes

even more fixes from third map test

fix crash (?)