Fixes #8677.  Add formAction.html form handler that makes a javascript callback without reloading the page for automated form submit testing.  Added form submit tests to Form.html.  Removed _valueChanged dead code.
Fixes #8677.  Add formAction.html form handler that makes a javascript callback without reloading the page for automated form submit testing.  Added form submit tests to Form.html.  Removed _valueChanged dead code.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@16762 560b804f-0ae3-0310-86f3-f6aa0a117693

kitsonk/delite,kitsonk/delite,Sam-Cummins/delite,harbalk/delite,Sam-Cummins/delite,harbalk/delite