anchor.diff:    });
   
     // The table of groups on the right.
  -  GroupsTable = React.createClass({
  +  var GroupsTable = React.createClass({
       groupCheckboxClicked: function(event) {
         var value = event.currentTarget.checked;
         var group_id = parseInt(event.currentTarget.getAttribute('id'));
  
positive.code:     }
    });
  
    GroupsActionsColumn = React.createClass({
      performAction: function(event) {
        var action = event.currentTarget.getAttribute('id');
        this.props.performAction(action);
  
negative.code: 
    // The master component that manages both tables and
    // the add/remove actions
    var GroupsManager = React.createClass({
      getInitialState: function() {
        return {
          students: [],
  