Problems with Makefile.PL

Thanks for your work on this module.

This short PR addresses a couple of issues.

Fix the links to the repository they currently go to the wonrg repo (https://github.com/SvenDowideit/Data-Foswiki).
Add CGI prereq, it's no longer a code module:

https://rt.cpan.org/Public/Bug/Display.html?id=99916