The upstream sources contain .css files that do not conform to DFSG, since
the following banner prevents their reuse.
/* Copyright (C) 2004-2009 Mike Pall.
* You are welcome to use the general ideas of this design for your own
* sites. But please do not steal the stylesheet, the layout or the
* color scheme.
Moreover the upstream made explicit that .html files (will) be licensed
under terms not suitable for Debian:
> If you insist it is unreadable, I can write a simple css to just format
> the page, and make it MIT/X.
The HTML files contain a copyright, too. And I haven't decided on
a license for them, either. I.e. they are unacceptable for Debian.
Most users search online for the docs, anyway. And the online URL
for the docs is e.g. printed at startup.
The sources has been repackaged removing doc/*.