receive: function(event, ui) {
      $.post('/projects/' + project_id + '/sprints/' + sprint_id + '/user_stories/' + ui.item.attr('data-story') + '/unplan', {format: 'json'}, function(data) {
        if(data.ok === true) {
          $('#points_planned').html(data.points_planned + ' story points');
          $('#flashs').html('Sprint reordered');