Add option to disable Bard sounds

+++ thx for this post and thx @ riley for doing something… I am having a harder time than most people to filter and concentrate on what is said when there’s too much bg noise around, but the constant bard pling-plang-plong made it nearly impossible.

I tended to lower sfx greatly when one was around, like in events, but when you need to hear important indicators in dungeons that’s not an option.