Minor clean up in JsonParser.

genericcore.cpp

@@ -162,7 +162,7 @@ void GenericCore::onSendItemTriggered(const QByteArray& jsonData) {
 void GenericCore::onItemsFetched(const QByteArray jsonData) {
   emit displayStatusMessage("New items fetched.");
   // TODO ? check compability of JSON structure beforehand?
-  // NEXT check if item already exists ? ;
+  // NEXT check if item already exists and apply changes (UUID,...) ? ;
   m_mainModel->appendItems(jsonData);
 }