[FIX] iban read method to accept a single item or a list

web-client sometimes passes a list of ids, or just a single id.
In the latter case a single record is returned, instead of a list of records.
Adjust code to cope with that situation.

account_banking/account_banking.py

@@ -1118,6 +1118,8 @@ class res_partner_bank(osv.osv):
         Convert IBAN electronic format to IBAN display format
         '''
         records = self._founder.read(self, *args, **kwargs)
+	if not isinstance(records, list):
+            records = [records,]
         for record in records:
             if 'iban' in record and record['iban']:
                 record['iban'] = unicode(sepa.IBAN(record['iban']))