anchor.diff:  %>
   
   <% # One table for fixed size column used for label, and another one for the trees %>
  -<table style="width: 100%; table-layout: fixed; overflow: auto;">
  +<table style="width: 100%; table-layout: fixed;">
       <tr><td style="width: 180px; vertical-align: top; text-align:right;">
           <b> Testcase assignment &nbsp;</b>
       </td><td><div>
  
positive.code:                 'data': {
                      'id': rootnodeid,
                      'text': "Unassigned testcases",
                      'children': translate(data)
                  },
                  'check_callback': true
  
negative.code:             // Delete it if it is empty
              tree.delete_node(node);
          } else {
              // Otherwise clean up children:
              // BugFix: It is important to copy the array (using slice), because
              // deletion changes the array and may therefore skip some values
              var children = node.children.slice();
              // For each child
              for (var child of children) {
                  cleanup(tree, tree.get_node(child));
              }
          }
  