Merge pull request #96 from kanton-bern/bugfix/HELLODATA-1812_distinc…

…t_user_result_in_search

HELLODATA-1812 - unique user result in search

hello-data-portal/hello-data-portal-api/src/main/java/ch/bedag/dap/hellodata/portal/user/service/UserService.java

@@ -399,7 +399,11 @@ public List<AdUserDto> searchUser(String email) {
         if (email == null || email.length() < 3) {
             return new ArrayList<>();
         }
-        return userLookupProviderManager.searchUserByEmail(email);
+        return userLookupProviderManager.searchUserByEmail(email)
+                .stream()
+                .collect(Collectors.toCollection(LinkedHashSet::new))
+                .stream()
+                .collect(Collectors.toList());
     }
 
     @Transactional(readOnly = true)