Make the bounty boards work similar to the job boards.

[Unjo]

At the moment all the bounties are usually taken rather quickly, right now 7/8 are claimed in the first 30 hours of the reset when we are likely to see about another 50 hours on this reset. I'd like to suggest that after 24 hours of a bounty being claimed, it will be wiped and the spot will be free for a new one to replace it after the usual rng waiting time has lapsed to give a more continuous feel, similar to the job board.

I think this will help now that the server is geared to slightly longer reset times than what was considered the norm for seemingly a long time.