Beginnings of Model Designer

We are now fetching the crucial information from the server, and
displaying a primitive page of editor controls.  Ugly, but demonstrates
all the key roundtrips.

Introduced CommonFunctions, for stuff that is so elemental it doesn't
even require a logged-in session.

Removed some leftover println's in RatingGadget.
We are now communicating the Instance Props

Also, we are properly setting up InputGadgets for the editors.
We now sort the Instance Properties