DB Schema/Characters: removed columns auctionhouse.item_template, character_inventory.item_template, guild_bank_item.item_entry and mail_items.item_template and created item_instance.itemEntry column instead of them.

As a side effect moved related queries to prepared statements.
As one more side effect fixed not shown and lost mail items in returned expired mail (patch by Quriq14).

--HG--
branch : trunk

src/server/game/Guilds/Guild.cpp

@@ -476,7 +476,6 @@ bool Guild::BankTab::SetItem(SQLTransaction& trans, uint8 slotId, Item* pItem)
         stmt->setUInt8 (1, m_tabId);
         stmt->setUInt8 (2, slotId);
         stmt->setUInt32(3, pItem->GetGUIDLow());
-        stmt->setUInt32(4, pItem->GetEntry());
         CharacterDatabase.ExecuteOrAppend(trans, stmt);
 
         pItem->SetUInt64Value(ITEM_FIELD_CONTAINED, 0);