Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4

Conflicts:
	src/server/game/AI/CoreAI/TotemAI.cpp
	src/server/game/Entities/Unit/Unit.cpp
	src/server/game/Globals/ObjectMgr.cpp
	src/server/game/Handlers/ItemHandler.cpp
	src/server/game/Spells/Spell.cpp
	src/server/game/Spells/SpellEffects.cpp
	src/server/scripts/Spells/spell_shaman.cpp
	src/server/scripts/Spells/spell_warlock.cpp

src/server/game/Grids/Notifiers/GridNotifiers.cpp

@@ -106,10 +106,10 @@ void VisibleChangesNotifier::Visit(CreatureMapType &m)
 void VisibleChangesNotifier::Visit(DynamicObjectMapType &m)
 {
     for (DynamicObjectMapType::iterator iter = m.begin(); iter != m.end(); ++iter)
-        if (IS_PLAYER_GUID(iter->GetSource()->GetCasterGUID()))
-            if (Player* caster = (Player*)iter->GetSource()->GetCaster())
-                if (caster->m_seer == iter->GetSource())
-                    caster->UpdateVisibilityOf(&i_object);
+        if (Unit* caster = iter->GetSource()->GetCaster())
+            if (Player* player = caster->ToPlayer())
+                if (player->m_seer == iter->GetSource())
+                    player->UpdateVisibilityOf(&i_object);
 }
 
 inline void CreatureUnitRelocationWorker(Creature* c, Unit* u)
@@ -299,12 +299,12 @@ void MessageDistDeliverer::Visit(DynamicObjectMapType &m)
         if (target->GetExactDist2dSq(i_source) > i_distSq)
             continue;
 
-        if (IS_PLAYER_GUID(target->GetCasterGUID()))
+        if (Unit* caster = target->GetCaster())
         {
             // Send packet back to the caster if the caster has vision of dynamic object
-            Player* caster = (Player*)target->GetCaster();
-            if (caster && caster->m_seer == target)
-                SendPacket(caster);
+            Player* player = caster->ToPlayer();
+            if (player && player->m_seer == target)
+                SendPacket(player);
         }
     }
 }