updated dialogs and NOMI script

NOMI script now includes "check here to update PND2 for client delay".
Cut code from Appt Letter dialog, to use in NOMI dialog. Will branch
master and update Appt Letter script after merge (need to get that
function out of the Appt Letter script, as we should probably never be
updating PND2 for client delay at the same time as sending an
appointment letter).