#39 XML element order: Project notes are moved to the last task

[kaptijnr]

If the project notes are put after the Tasks-section in the
XML-file, OWB adds them to the last task instead of to
the project. Example:

<Project>
<Notes>
... project notes
</Notes>
<Tasks>
... tasks
</Tasks>
</Project>

This is imported correctly.

<Project>
<Tasks>
...tasks
</Tasks>
<Notes>
... project notes
</Notes>
</Project>

Now the project notes are added to the last task.