Fix OpenCustomer to not call browse with int

issue2836
review572002

sale.py

@@ -1678,7 +1678,7 @@ class OpenCustomer(Wizard):
                 ('module', '=', 'sale'),
                 ('inherit', '=', None),
                 ], limit=1)
-        wizard = Wizard.browse(model_data.db_id)
+        wizard = Wizard(model_data.db_id)
 
         action['name'] = wizard.name
         return action, {}