OK, now here's a big one: XHTML output for InsetBibtex. It's not perfect---

OK, now here's a big one: XHTML output for InsetBibtex. It's not perfect---
see the notes---but it does work reasonably well. And it will work a lot
better when an unrelated patch of mine goes in: one that generally improves
the display of BibTeX-derived information.

Note how we use the TOC here, which has already gathered the information we
need. This can also be done for other things.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@30056 a592a061-630c-0410-9148-cb99ea01b6c8