OSIS-5712 fix duplicate rows for external lu search
OSIS-5712 fix duplicate rows for external lu search

When filtering by country or city, duplicate rows appeared.
This is due to the fact that we do a join with entity and
entity version. An entity could potentially have more than
one version, thus leading to similar rows that differs only
by entity version.

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