WozUI: Implement logging functionality to keep track of the ranked list of returned results

[alespeggio]

Whenever we search by using the search bar at the top a set of 5 ranked results is returned to the wizard. Right now, we keep track only of the buttons the wizard selects. However, we should also keep track of this ranked list (the returned paragraphs) as it might be useful to know which ones the wizard selected out of the returned options (from the SearchAPI ). This might require implementing changes also on Core