erp5_accounting: Revert "Remove table name from selected column aliases."

This reverts only one hunk of the original commit, as this part causes a
regression not trivial to fix.

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingTransactionModule_getAccountingTransactionList.py

@@ -98,7 +98,7 @@ select_dict['total_credit'] = None
 # Without this, ColumnMapper would choose to use accounting_transaction.reference, because a lot of
 # columns from that table are used. But it does not realise there is no portal_type column *and*
 # a (portal_type, reference) index exists on catalog.
-select_dict['reference'] = 'catalog.reference'
+select_dict['catalog.reference'] = None
 select_dict['specific_reference'] = None
 select_dict['project_uid'] = None
 select_dict['payment_uid'] = None