Switch to whitelist for animations

Disable animations for all SettingsPreferenceFragments, unless they
explicitly ask for them before creating their preference screens.

Turn it on for all fragments using the cached removal currently.

Bug: 27713314
Change-Id: I1bc14e7aeb3ee5b8ddb4f3547f472305cd312edf

src/com/android/settings/bluetooth/DeviceListPreferenceFragment.java

@@ -77,6 +77,7 @@ public abstract class DeviceListPreferenceFragment extends
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        setAnimationAllowed(true);
 
         mLocalManager = Utils.getLocalBtManager(getActivity());
         if (mLocalManager == null) {