New title page reqs

The title page requirements have changed since the last update to withesis. 

This adds a newly required committe section of the title page. For details, see
http://www.grad.wisc.edu/education/completedegree/pguide.html#145 and
http://www.grad.wisc.edu/education/completedegree/new_phd_title_page.pdf .

Thanks for making withesis. It's great and I hope you can accept this contribution!
Katy