PvP Bounty System

Allow users to set a simple reward against another user.

Changes Required:

• Allocate some storage to active bounties. Track all requests for bounties/additions. Multiple users might bounty same target, if bounties displayed sum total available and who to contact.
• Add commands to the bot to add and claim bounty. Bot will ping posters and will close bounty when claimant has confirmed transaction completed via kill log and payment.