mysite 5.x-2.0-beta4

New verions of the beta, with some new wrinkles.

Since <fieldset> is only valid for forms, I refactored the layout, css, and js files to use DIVs for the jQuery and collapse elements.

Also adds two new layouts and a new css file.

I think this is the final beta before the next release. Still need to update the documentation and finish the API docs.