Fix unable to open newly created graphs
Fix unable to open newly created graphs

Without this change the 'data-id' attribute of the list entry is empty,
as graph.properties.id is not set, and nothing would happen when
clicking a newly created graph.

taylorzane/noflo-ui,flyboarder/noflo-ui,noflo/noflo-ui,oportocala/noflo-ui,lxfschr/noflo-ui,lxfschr/noflo-ui,rasata/noflo-ui,noflo/noflo-ui,rdf-pipeline/noflo-server,rdf-pipeline/noflo-server,rasata/noflo-ui,oportocala/noflo-ui,taylorzane/noflo-ui