Please squash merge this, as there is crap in my commit history.
Enable chat sound for:
0=no client messages create a sound effect
1=whisper only creates a sound effect
2=if your nickname is tagged, a sound effect is created
3=whisper or nickname tagged
4=whisper, nickname tagged & server msg
5=whisper, nickname tagged, server msg & clientside messages(adding players as friends via /friend <..>)
6=all chat messages create a chat sound
