Fix form submit button.

The Submit button found at http://www.demo.test.onehippo.com/contact is not sending the contents of the form.

The page loads like it will submit, then the view refreshes with the form contents still in place, but the URL has been updated. An example of a "new" URL is: http://www.demo.test.onehippo.com/contact?r33_r1_r1_r1:u_u_i_d=51c9de26-ba77-445a-abaf-cf416bbe8282