Tasklist checkboxes are not supported yet

[mrueg]

A task list currently gets converted to

- [ ] Checkbox
- [x] Ticked Checkbox

<ul>
<li><input disabled="" type="checkbox" /> Checkbox</li>
<li><input checked="" disabled="" type="checkbox" /> Ticked Checkbox</li>
</ul>

it should be converted to this instead:

<ac:task-list>
<ac:task>
<ac:task-id>1</ac:task-id>
<ac:task-status>incomplete</ac:task-status>
<ac:task-body>
 <span>Checkbox</span>
 </ac:task-body>
</ac:task>
<ac:task>
<ac:task-id>2</ac:task-id>
<ac:task-status>complete</ac:task-status>
<ac:task-body>
 <span>Ticked Checkbox</span>
 </ac:task-body>
</ac:task>
</ac:task-list>