Fixed old reference

src/main/java/org/gesis/dda/wizard/web/rest/TemplateResource.java

@@ -78,8 +78,8 @@ public class TemplateResource {
         bundlesSource.setOwner(userRepository.findOneByLogin(SecurityUtils.getCurrentUserLogin()).get());
         bundlesSource.setBundlesSourceState(BundlesSourceState.UNPROCESSED);
         bundlesSource.setType(BundlesSourceType.EXCEL_SPREADSHEET);
-        bundlesSource.setReference("excel-database-" + result.getId());
-        bundlesSource.setData("excel-database-" + result.getId());
+        bundlesSource.setReference(Long.toString(result.getId()));
+        bundlesSource.setData(Long.toString(result.getId()));
         BundlesSource resultBundlesSource = bundlesSourceRepository.save(bundlesSource);
 
         result.setBundlesSource(resultBundlesSource);