A 'HelloWorld' example from the documentation is appearing at
the bottom of the contents page:
http://www.boost.org/doc/libs/1_63_0/doc/html/libraries.html
I think this will remove it, although it won't be clear until the change
is checked into develop and the documentation rebuilt.
* Use `doc/src/*.css` instead of `doc/html/*.css`.
* Remove wiki and people directories.
* Some documentation fixes.
* Left out `minimal.css` changes and boostbook changes because of clashes.
[SVN r63347]
