Bad sound of repeating of sound effects of selling/buying/moving

[Vaaclav]

As items got option to be bought/sold/moved (moved between stash and backpack) not per piece, there came one problem - sound effect of selling/buying is played for each bought/sold/moved piece. And in large amounts it gave very bad effect.

So, it would be really good if sound effect would be played only once per whole operation, not per each piece.