OSIS-2666 Display not empty warning message on non root egy
OSIS-2666 Display not empty warning message on non root egy

	modified:   base/business/group_element_years/postponement.py

uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis