Fix for Rook's signet ring quest, increase ring value.

The addition of the longsword for alcohol system to Rook broke his signet ring quest, this fix repairs it. I've also increased the money given for returning a signet ring in general. Rings were returning 50-1500 shillings, now they should return 640-5000 shillings. Worth returning for new players, but probably not lucrative enough to farm them.