gitHub pull request 31, G Mongelli, align cells right when no fact
and fact prototype is numeric, apply to GUI and file table rendering
gitHub pull request 32, update pg8000 for new module imports, G Mongelli
gitHub pull request 33: Correct display of multiple open structural nodes
in a single axis, G. Mongelli
gitHub pull #34, G. Mongelli
adaptation of pull request
1) createFact updates or removes cached modelXbrl _fact* tables
2) table's fact prototypes saved as facts into instance when
   a) saving instance (in background)
   b) losing focus on table (in foreground)
   c) resizing table (in foreground)