anchor.diff:  import 'dart:html';
   import 'package:ddays/task.dart' show Task, fromJson;
   import 'package:ddays/storageservice.dart' as st;
  -
   
   // taskContainer returns a Div Element with the
   // child nodes of singleTaskElement and editTaskElement.
  
positive.code:   ti
      ..value = task.summary
      ..classes.addAll(['editinputform', 'summarytext'])
      ..addEventListener('blur', (e) {
        li.classes.toggle('hideedittask');
        li.parent.children[0].classes.toggle('hidesingletask');
      })
      ..addEventListener('keyup', (KeyboardEvent e) {
        if (e.keyCode == KeyCode.ENTER) {
          task.summary = ti.value;
          st.editItemInStorage(task);
          li.parent.children[0].classes.toggle('hidesingletask');
          li.classes.toggle('hidesingletask');
          li.parent.children[0].children[0].text= ti.value;
        }
    });
    button
      ..onClick.listen((e) {
        st.deleteItemInStorage(task);
  
negative.code:     ..onClick.listen((e) {
        st.deleteItemInStorage(task);
        div.parent.parent.remove();
      });
    div
      ..classes.add('delebuttonelement')
      ..append(icon)
  