Make A11y SUW launchable from SUW and small UX changes based on last round of

UX studies.

Change-Id: I9c20cd3abf910a37731da2af604f3af2cd30e942

src/com/android/settings/accessibility/ToggleFeaturePreferenceFragment.java

@@ -99,7 +99,6 @@ public abstract class ToggleFeaturePreferenceFragment
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
-        setHasOptionsMenu(true);
         installActionBarToggleSwitch();
     }