message: Popped and added for refresh
  Matches the activity of finish and start
diff: @@ -75,7 +75,7 @@ class FragmentNavigator extends SceneNavigator {
  fragmentManager.popBackStack();
  FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
  fragmentTransaction.setCustomAnimations(enter, exit, popEnter, popExit);
  - fragmentTransaction.replace(stack.getChildAt(0).getId(), new SceneFragment(scene, null), stack.getId() + "_" + key);
  + fragmentTransaction.add(stack.getChildAt(0).getId(), new SceneFragment(scene, null), stack.getId() + "_" + key);
  fragmentTransaction.addToBackStack(stack.getId() + "_" + String.valueOf(crumb));
  fragmentTransaction.commit();
  }
  