Added EquippableItem that inherits Item.java to distinguish between equpment and misc. items.
HEAD_SLOT = 0
AURA_SLOT = 1
NECKLACE_SLOT = 2
WEAPON_SLOT = 3
TORSO_SLOT = 4
OFFHAND_SLOT = 5
PRIMARY_RING_SLOT = 6
LEGS SLOT = 7
SECONDARY_RING_SLOT = 8
BOOTS_SLOT = 9
COMPANION_SLOT = 10
Total number of slots = 11
Equipment methods that are linked to inventory
Daily full commit 06/09/2014