Search - add "live" search results

- now it is possible to have Search results directly when
you are typing (and not only when you press on the Search button
in the IME)
- implement onQueryTextChange(...)
- take care about re-runnin the saved query when the app is resumed

Change-Id: I021c8a9a95b50dce69ab6dace81eecb2fb188f18

src/com/android/settings/dashboard/SearchResultsSummary.java

@@ -151,6 +151,11 @@ public class SearchResultsSummary extends Fragment {
         return true;
     }
 
+    public boolean onQueryTextChange(String query) {
+        updateSearchResults(query);
+        return true;
+    }
+
     public boolean onClose() {
         clearResults();
         return false;