Merge pull request #6555 from RosettaCommons/roccomoretti/add_ligand_smiles_field
[Foldit] Add SMILES to the list of short data uploaded.
This will allow better data processing on the server-side. ( This is the client support for crowdgames/foldit-server-rails#674 )
This is tested to be robust to both proposed and existing Foldit server code. (With current server code, the extra payload is just ignored.)
RELEASE NOTES: (None)