Support date field in Legacy Consumer

[knowler]

Details

Right now, the legacy consumer just renders an input element with the type attribute set to text for a Fields API date node type. This works, however, it’s not ideal. We want this to render the jQuery UI datepicker widget along with support for picking time as implemented in the Form Field Manager addon.

Acceptance Criteria

• [ ] Use datepicker for rendering Fields API date field in legacy consumer.