Code to define modeltype RM-2380

create a modeltype table used by models and pfts. The table is
initialized with the types already in the models (not pfts). All models
and pfts are associated with a modeltype next.
User can add/edit modeltypes and see the pfts/models associated with it.
I'd prefer "number of models", etc. for these three headings.  Or even "# of models" if you don't think there's room to spell it out and don't want the headings to wrap.