[8183] Some gameobject despanw related fixes Author: VladimirMangos

* Implement use `consumable` field in gameobject template for gameobject required explcit despawn at use.
    * Move gameobject template fields cech function from Gameobject to gameobject template class, and update callers.
    * Cast spells at gameobject use with gameobject guid as original caster guid, as already used in some other cases. (skipped)

--HG--
branch : trunk

src/game/LootMgr.cpp

@@ -1152,7 +1152,7 @@ void LoadLootTemplates_Gameobject()
     {
         if(GameObjectInfo const* gInfo = sGOStorage.LookupEntry<GameObjectInfo>(i))
         {
-            if(uint32 lootid = GameObject::GetLootId(gInfo))
+            if(uint32 lootid = gInfo->GetLootId())
             {
                 if(!ids_set.count(lootid))
                     LootTemplates_Gameobject.ReportNotExistedId(lootid);