This improves layout on mobile devices. I had to remove declaration
for the 'rev' element as otherwise the 'meta' element would have
namespace declaration as well, for no reason. Possibly there's a
better solution.
The footer template has code to generate revision number,
which was never updated to git and therefore generates no text,
but still generates a somewhat complex table structure. This
commit removes code for version numbers, and makes output a simple
div.
I've also added a hook to use pick content of whatever paragraph
with role of 'copyright' the document has, since right now we
pick copyright only from 'bookinfo' element, and Docbook renders
bookinfo element right at the start, and for Boost.Build documentation
I want documentation to start with some hints how to start, not
with a copyright statement.
Integrate into Boost.Build.
Add HTML stylesheet options for Indexes.
Add rule to XSL stylesheets to place Indexes in their own HTML CSS class.
[SVN r72962]
