[LogiLogi-list] Added deletion & submitted Fosdem-presentation

I just added deleting-functionality... Users, user-group-admins and
the site-admin can now delete the pages over which they have rights.

Having something like trash-can-functionality later on would be great,
but for now plain and simple deletes...

I will be away for the weekend. But before that I'll be meeting the
5 students in Nijmegen that will be collaborating with us on Manta 
(the usability-research among other things) for the weeks to come.

And I just submitted the Fosdem-presentation...

Wybo Wiersma