Adding the Author Bio to the TOC
Adding the Author Bio to the TOC

This commit updates the logic of the XSL that generates the TOC to
include the author bio in the TOC. This is done by changing the
line excluding colophons to only exclude colophons if they do not
contain the class abouttheauthor (this is standard for our boilerplate).

oreillymedia/HTMLBook,oreillymedia/HTMLBook,oreillymedia/HTMLBook