Core/Spells: Cleanup in Spell.h:

- Codestyle (fix function naming) and cleanup changes in SpellCastTargets class, also access variables of this class by getters/setters
 - Move IsQuestTameSpell function to SpellMgr.h
 - Move UnitList typedef to Unit.h
Additionally - add missing copyright notice to SpellAuraEffects.h

src/server/game/Entities/Unit/Unit.h

@@ -338,6 +338,8 @@ class Totem;
 class Transport;
 class Vehicle;
 
+typedef std::list<Unit*> UnitList;
+
 struct SpellImmune
 {
     uint32 type;