Overrides the default to be able to forward to the directory listing
        instead of the default change_list_view

def response_change(self, request, obj):
        """
        Overrides the default to be able to forward to the directory listing
        instead of the default change_list_view
        """
        if (
            request.POST
            and '_continue' not in request.POST
            and '_saveasnew' not in request.POST
            and '_addanother' not in request.POST
        ):
            # Popup in pick mode or normal mode. In both cases we want to go
            # back to the folder list view after save. And not the useless file
            # list view.
            if obj.folder:
                url = reverse('admin:filer-directory_listing',
                              kwargs={'folder_id': obj.folder.id})
            else:
                url = reverse(
                    'admin:filer-directory_listing-unfiled_images')
            url = "{0}{1}".format(
                url,
                admin_url_params_encoded(request),
            )
            return HttpResponseRedirect(url)
        return super(FileAdmin, self).response_change(request, obj)