Irish IPv6 Task Force website updates

To prepare for the launch of the Irish IPv6 Summit 2010 (Wed 19th May 2010, Dublin Catle, Ireland), the Irish IPv6 website has had a minor revamp. The main index page and the about IPv6 page have both been updated to reflect recent developments in the case for IPv4 depletion, and to reflect the work done by the Irish IPv6 Task Force to date to promote IPv6 in Ireland and further afield.