Scripts/EmeraldDragons: Clean up a bit on the scripts:

- Remove script for Shade of Taerar, replaced with SAI equivalent (Malcrom)
- Remove script for Demented Druids, replaced with SAI equivalent (Malcrom)
- Add supportscript for Mark of Nature (Kaelima)
- Some other minor changes here and there

src/server/game/Entities/Unit/Unit.cpp

@@ -12889,9 +12889,10 @@ Unit* Creature::SelectVictim()
     // search nearby enemy before enter evade mode
     if (HasReactState(REACT_AGGRESSIVE))
     {
-        target = SelectNearestTargetInAttackDistance();
+        target = SelectNearestTargetInAttackDistance(m_CombatDistance ? m_CombatDistance : ATTACK_DISTANCE);
+
         if (target && _IsTargetAcceptable(target))
-                return target;
+            return target;
     }
 
     Unit::AuraEffectList const& iAuras = GetAuraEffectsByType(SPELL_AURA_MOD_INVISIBILITY);