(framework portion)
suggestionCursor has new callbacks for impressions and clicks
- impressions now used to trigger "more" UI, cleanup apis around that
search dialog reports which position was clicked on via cursor#respond
- can now detect when sources under "more results" are clicked
- also used to simplify existing stuff:
- can detect when "more results" entry is clicked and toggle base on that (no longer need INTENT_ACTION_CURSOR_RESPOND one off)
- use response from click reporting to instruct which position should be selected