Prevent app from being restarted in response to 'screenSize' event. The entry for orientation at http://developer.android.com/guide/topics/manifest/activity-element.html suggests that for applications targetting API levels greater than or equal to 13, orientation and screenSize android:configChanges options should be specifed together. Prior to this, holding the device in a portrait position while repeatedly restarting the app could cause a lifecycle teardown event.