working on e.g. "Paola could have made this red wine"
UI tweaks
fix english morphology of "could have X"
add TODO about clearing cache at initialization
add TODO about need for more testing of unify/get-in.
add sandbox/get-in: convenience wrapper of unify/get-in that allows sequences as first arg - in case of a sequence, take the first one and discard the rest, if any.
move "libro di lavoro" before "i tuoi preferiti"