New interesting demo available

[MJS@mjs.us]

Back to the back button - I observed this while testing Datatables with large datasets where a data pull took 0.5 to 1 seconds.  This is noticeable enough where I can't use the new back button functionality quite yet.

1.  Access IWForm+DataTables [populated by Content Handler] by GoToURL, datatables refreshes once correctly.
2.  Back button to an IWForm then forward button to IWForm+DataTables, datatables refreshes twice incorrectly.
3.  Add an address to the url bar of a static page or non IW app and navigate to it.
4.  Back button to IWForm+DataTables, datatables refreshes once correctly.

Navigating to IWForm+DataTables by GoToURL always works correctly.
Navigating to IWForm+DataTables from a static or non IW site by back/forward buttons always works correctly.
Navigating to IWForm+DataTables from an IWForm by back/forward buttons causes double calls to content handler.
Extra test:  DataTables in a static page served by an IW app Content Handler always works correctly with back/forward buttons.