feat (AHBot) : add AuctionHouseBot
fix (NPCBots) : a few fixes and customization

 - At each level change, the bot's equipment is reset and randomized. So now the bots are no more so powerful, with level 80 weapons!
 - Implemented attack and abandon commands, to force bots to attack a creature or to flee.
 - Minor : at loading, display the location names of the bot, instead of the ids.
feat (Loot) : only interesting loot

 - Loot only equipments the player can equip.
 - Loot only recipes the player has the profession for or didn't already learn.
feat (Loot) : custom rates for loot by quality

Can set the minimum drop rate for quality uncommon+ loot.
fix (Loot) : remove filtered loot from containers

Fix the bug when a container contains only filtered loot and doesn't disappear.
fix (Config) : add configuration entries for loot.