refactor: handle api models identifiers

frontend/pages/quiz.vue

@@ -130,8 +130,8 @@ export default class Login extends Vue {
       responsesFormatted.push({
         score: value.score ? value.score : 0,
         comment: value.comment,
-        questionId: Number.parseInt(key.replace("http://localhost:8080/questions/", "")) // FIXME use correct url when score will be a REST ressource
-      })
+        questionId: key
+      });
     });
 
     this.saving = true;