Add saved Search queries feature

- update SearchResultsSummary fragment to have two lists:
one for Search suggestions (saved queries) and one for
Search results
- a tap on a saved query will launch that Search query
- show the list of saved queries when tapping on the SearchView
- do some fancy hidding / unhidding of the saved queries list
and results list

Change-Id: If15055ab78b0ec5eef4e543173dc7b866bd08e27

src/com/android/settings/SettingsActivity.java

@@ -1280,6 +1280,7 @@ public class SettingsActivity extends Activity
             mSearchResultsFragment = (SearchResultsSummary) switchToFragment(
                     SearchResultsSummary.class.getName(), null, false, true, title, true);
         }
+        mSearchResultsFragment.setSearchView(mSearchView);
         mSearchMenuItemExpanded = true;
     }