Adds auctions.replacePlayerNames and auctions.dropAtFeet boolean flags into the config.yml.

auctions.replacePlayerNames: true will replace any player name of the seller with that of the buyer in the NBT of the item upon transfer similarly to the auctions.replaceUUIDs: true setting that replaces and UUID strings.

auctions.dropAtFeet: true will force items that are given to a player to be always dropped at their feet rather than directly put into their inventory. This fixes some compatibility problems with plugins that change the item's NBT when transferred to another player on an event when the player picks up an item.