text: $(function() {
      // dragula.js
  	altair_sortable.dragula_sortable();
  });
  
  altair_sortable = {
      dragula_sortable: function () {
          var drake = dragula([document.getElementById('dragula_sortable')]);
  
          // add class to dragula containers
          var containers = drake.containers,
              length = containers.length;
  
          for (var i = 0; i < length; i++) {
              $(containers[i]).addClass('dragula');
          }
  
          // refresh grid on drop
          drake.on('drop',function(){
  
              UIkit.$html.trigger('changed.uk.dom');
              $window.resize();
  
          })
  
      }
  };