Bugfix: more NRE reductions in server-demo - Skip VoiceData and other messages that we can't support in editor environment (or don't want to) - Properly "disconnect" player when entity is being destroyed - "shutdown" the demo server when at the end of the demo to avoid unnecessary replication attempts/NREs This brings down NRE count during playback and shutdown from 40+ down to 4. Next up need to figure out if Tick processing works correctly (it ticks, but main player doesn't move). Tests: played back the same client demo, saaw the reduction in errors