Fix null-pointer-exceptions when travel history is empty and launching the 3dmap
Fix null-pointer-exceptions when travel history is empty and launching the 3dmap

jeoffman/EDDiscovery,jgoode/EDDiscovery,vendolis/EDDiscovery,jthorpe4/EDDiscovery,mwerle/EDDiscovery,mwerle/EDDiscovery,jgoode/EDDiscovery,jeoffman/EDDiscovery,vendolis/EDDiscovery