Added a new world artifact, the axe of Durin, grants more power in the hands of a dwarf

game/engines/default/engine/interface/ActorInventory.lua

game/modules/tome/data/damage_types.lua

game/modules/tome/data/general/encounters/arda-west.lua

game/modules/tome/data/general/objects/objects.lua

game/modules/tome/data/general/objects/special-artifacts.lua

game/modules/tome/data/general/objects/world-artifacts.lua

game/modules/tome/data/timed_effects.lua

game/modules/tome/data/zones/ancient-elven-ruins/npcs.lua

game/modules/tome/data/zones/ancient-elven-ruins/objects.lua

game/modules/tome/data/zones/ancient-elven-ruins/zone.lua