feat(journal title): [AOU-548] issn allow to search on an exact value for the title

https://issues.unige.ch/browse/AOU-548

Can be tested with frontend aou-portal!170 (merged)

AoU-Admin/src/main/java/ch/unige/aou/controller/admin/ExternalDataController.java

@@ -108,13 +108,14 @@ public class ExternalDataController {
 
   @GetMapping(AouActionName.GET_JOURNAL_TITLES)
   public HttpEntity<Collection<JournalTitleDTO>> getJournalTitlesByISSN(@RequestParam(required = false) String issn,
-                                                                        @RequestParam(required = false) String title,
-                                                                        Pageable page) {
+          @RequestParam(required = false) String title,
+          @RequestParam(required = false, defaultValue = "false") boolean strict,
+          Pageable page) {
     if (!StringTool.isNullOrEmpty(title)) {
       SearchDTO search = new SearchDTO();
       search.setPage(page.getPageNumber());
       search.setSize(page.getPageSize());
-      String[] searchArray = new String[] { "title=" + title + "*" };
+      String[] searchArray = new String[] { "title=" + title + (strict ? "" : "*")};
       search.setSearch(searchArray);
       return new ResponseEntity<>(this.journalTitleService.getJournalTitlesByTitle(search), HttpStatus.OK);
     } else if (!StringTool.isNullOrEmpty(issn)) {