erp5_wendelin_telecom_ingestion: fixing bug, restrict download tries to invalid Data Sets.

bt5/erp5_wendelin_telecom_ingestion/SkinTemplateItem/portal_skins/erp5_wendelin_telecom/getDataStreamList.py

@@ -3,7 +3,7 @@ portal_catalog = portal.portal_catalog
 
 try:
   data_set = portal.data_set_module.get(data_set_reference)
-  if data_set is None:
+  if data_set is None or data_set.getReference().endswith("_invalid"):
     return { "status_code": 0, "result": [] }
 except Exception as e: # fails because unauthorized access
   context.logEntry("[ERROR] At script getDataStreamList")