Missing graphs in Vaadian dashboard when storeByFs=true

The graph selection on the Vaadin dashboard does not show the right graphs when storeByFs is enabled.

This is caused by the fact that we're using:

   m_resourceDao.getResourceById("node[" + nodeId + "]");

instead of:

   m_resourceDao.getResourceForNode(node);

The later "does the right thing" when storeByFs is enabled.