Start a research page (please help!)

This is started off the old research
page (http://www.uni-marburg.de/fb12/ps/research), so this is hopelessly
out-of-date. I've done minimal & safe updates (that is, listing TeXAS as
"past project"). Links still point to the Marburg CMS.
Add CaesarJ to past projects
More WIP
Add "my" current research projects

"my projects" = I created the websites of.
Research page: rephrase "work in progress"

Say it once, and address feedback from Tillmann on
ae256a32fbe5f86dd6249ddd4fb8780e1b95dbe7.
Add GADT project

As suggested by Tillmann.
Update ILC link

We have a better website for ILC, and I had forgot!
Merge pull request #10 from ps-mr/topic/research

Create a research page.