make share/duplicate icon work (no 'undefined' for empty query)
make share/duplicate icon work (no 'undefined' for empty query)

dbirchak/graph-explorer,dbirchak/graph-explorer,vimeo/graph-explorer,vimeo/graph-explorer,vimeo/graph-explorer,vimeo/graph-explorer,dbirchak/graph-explorer,dbirchak/graph-explorer