+ Q_INVOKABLE void addJourney(QDateTime start, quint32 duration, quint32 overtook, quint32 overtakenby);
+ Q_INVOKABLE void editJourney(quint32 index, QDateTime start, quint32 duration, quint32 overtook, quint32 overtakenby);
+ Q_INVOKABLE void deleteJourney(quint32 index);