Hello all,
1) graphene-gui (i.e., "light_client") is coming! "apt-get install graphene-gui" will bring in the qt5.5 light_client. Should be available in an hour or two. This will be built daily like the "graphene" package, which just has the CLI.
2) Some maintenance going on at the graphene daily PPA at the moment, graphene packages might not be available for an hour or two, just FYI