Remove dist in Mob casting AI for roots
Make the random addition to time_cancast actually useful

It was in ms so adding 0-4 ms doesn't really do much
Mobs cast root on random person on hatelist
Debuff/Slow on random mob on hatelist
Updated GetUnusedInstanceID to not recycle instance ID's unless it has reached max (65535)
Add SpellType_Root to EngagedCast check
Merge branch 'master' of github.com:EQEmu/Server
Mobs will now face their target they are casting on

Note: they do not switch their target, this is how live does it
Fix HOTs timer when they're in the song window