Include request.uuid in email subject

src/main/java/org/genesys2/server/service/impl/RequestServiceImpl.java

@@ -75,7 +75,7 @@ public class RequestServiceImpl implements RequestService {
 
 		Article article = contentService.getGlobalArticle("smtp.material-request", Locale.ENGLISH);
 
-		String mailSubject = article.getTitle();
+		String mailSubject = "[" + request.getUuid() + "] " + article.getTitle();
 
 		Page<Accession> accessions = genesysService.listAccessions(accessionIds, new PageRequest(0, Integer.MAX_VALUE));