Sol.data.frames.SortFrameHierarchy

Sol.data.frames.SortFrameHierarchy = function(sortFn)
Sorts all the __SolChildren__ in the hierarchy according to 
sortFn, or alphabetically if sortFn is not given.
Parameters:
sortFn - A function that determines sort order. See Sol.data.frames.TraverseFrameHierarchy
 fn parameter for sortFn parameters. Default is just table.sort with an
 alphabetic sort on frame names.