anchor.diff:              error: error
             });
           }.bind(this),
  +        // Close working indicator.
           complete: function() {
             document.getElementById('working').style.display = 'none';
           }
  
positive.code:     },
      // Asks for new info from backend and sets props accordingly.
      refresh: function() {
        document.getElementById('working').style.display = '';
        jQuery.ajax({
          method: 'GET',
          url: 'browse',
  
negative.code:         success: function(data) {
            this.setState({
              submissions: data,
              error: null
            });
          }.bind(this),
  