Merge "Refresh cached user array upon lockscreen settings changed" into nyc-dev

    private final ContentObserver mLockscreenSettingsObserver = new ContentObserver(mHandler) {

        @Override

        public void onChange(boolean selfChange) {

            // We don't know which user changed LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS,

            // so we just dump our cache ...

            // We don't know which user changed LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS or

            // LOCK_SCREEN_SHOW_NOTIFICATIONS, so we just dump our cache ...

            mUsersAllowingPrivateNotifications.clear();

            mUsersAllowingNotifications.clear();

            // ... and refresh all the notifications

            updateNotifications();

        }