Bug fixes for Warlock, Succubus, and Undead trait assignments; tweaks to undead and sniper class
Warlock and succubus traits are correctly assigned based on pawn gender
Undead trait won't be randomly applied
Undead will have a UI icon that shows on the colonist bar to help identify pawns that are undead
Undead will stop the bleeding on missing limb injuries (though they will not recovery missing limbs)
Sniper Class can now use any weapon to perform class skills; all projectiles used will inherit the look and sound of the equipped weapon
