Monster Spellcasting modification

As was suggested by players,So many low level mobs cast spells cast spells which severely hinder the low level player's building progres. These spells should be on higher level mobs. I took the liberty to move the casting of these spells to the higher level mobs to create challenge to higher level players and outright removed lightning bolt from living trees. 

-----Changes-----
-Dement on zombies has been moved to Tusked skeletons.
-Dement and palsy on battereds were moved to Daemon skeletons.
-Lightning bolt removed from Living trees and retained on Diseased Trees.