Several map fixes

- Removed a chest that was giving items to players were it shouldn't {x = 33199, y = 31923, z = 11}

- Removed some items from this small cave {x = 32815, y = 32280, z = 8}
- Fixed chest at {x = 32845, y = 31917, z = 6} not giving the skull of ratha
- Fixed chest at {x = 32847, y = 31917, z = 6} giving Ceiron's wolf tooth chain while it should give a normal wolf tooth chain
- Added missing rum flask at {x = 32963, y = 32645, z = 8}
- Added items from medusa shield quest into a bag {x = 33049, y = 32399, z = 10}
- Fixed boxes at this room {x = 32752, y = 32343, z = 14} since you can take only one, not all
- Removed some weapons and shield from Pithyus The Rotten room at {x = 32566, y = 31406, z = 15}
- Removed twin sun charm from {x = 33357, y = 31203, z = 8}. fixes #569
- Finally removed Nahlesar from map at {x = 32359, y = 32233, z = 7}, if you want it in your server, just add manually
- Added PZ into the tp at {x = 31909, y = 31187, z = 9}. fixes #527
- Added uniqueID (50023) into the lever at {x = 32573, y = 32121, z = 7}, still needs the script tho. #520
- Added uniqueID (50024) into the tree at {x = 32769, y = 31968, z = 7} from blood herb quest, still needs the script tho. #536
- Removed tiles from {x = 33196, y = 31674, z = 14}, {x = 33196, y = 31675, z = 14} and {x = 33196, y = 31676, z = 14} #536
- Changed normal tiles into glowing switches at {x = 33190, y = 31629, z = 13} and {x = 33191, y = 31629, z = 13}
- Removed bodies from around {x = 33145, y = 31594, z = 13}
- Added earth where there were black tiles seem from {x = 33109, y = 31614, z = 13}
- Removed behemothQuestRewards.lua since I couldn't find those uniqueIDs at map
- Changed NPC Uzon at {x = 32659, y = 31913, z = 0} into UzonE, that should teleport you back
- Finally updated blackKnightQuestReward.lua with correct reward, message and indentation
- Added Bone Key quest at carlin harbour
- Fixed/Added Hydra Egg quest
- Fixed koshei the deathless corpse #582

* Changed some chests to work with system.lua instead of own script where necessary - ref #439
- inquisitionQuestBookChest at {x = 32316, y = 32260, z = 8}
- adornedUHRuneQuestReward at {x = 33136, y = 31601, z = 15}
- crusaderHelmetQuestRewards at {x = 32427, y = 31943, z = 14}
- darashiaDragonQuestReward at {x = 33233, y = 32279, z = 12}
- druidOutfitQuestAmulet at {x = 32939, y = 31776, z = 9}
- elephantTuskQuestReward at {x = 32922, y = 32755, z = 7}
- explorerBroochQuestReward at {x = 32636, y = 31873, z = 10}
- fanfareQuestReward at {x = 32390, y = 31769, z = 9}
- fireAxeQuestRewards at ???
- giantSmithhammerQuestReward at ???

(PS: No, I haven't tested any change, just ran tfs and no error in console, if you find anything ingame just report it here and we will fix ASAP