Add Bounty system to requests

I have added a Bounty system to our request system. For those of you who do not know what a Bounty system is I will explain it briefly. When you go to the requests page and click on a request you will now have the option to add Bounty. You can select between a Megabyte or a Gigabyte option. When you submit the Bounty, the amount you input is deducted from your upload automatically and added to a pool for that specific request. Once that request gets filled, the up-loader of the request gets rewarded the Bounty for that specific request.

If for whatever reason a request gets deleted and Bounty has been added to that request, the Bounty will be refunded in full to those who submitted Bounty in the first place. Hope that explains it a bit.