relax SVN archive

Fixes for all of the footer links at http://www.nmr-relax.com/manual/index.html.

These problems were identified by the W3C link checker (http://validator.w3.org/checklink).

Removed the repository backup file text from the relax manual.

This is for http://www.nmr-relax.com/manual/Latest_sources_the_relax_repositories.html. The gzipped
repository dump file has not been created by Gna! for many, many years. The problem was identified
by the W3C link checker (http://validator.w3.org/checklink).

Fixes for the links at the bottom of all HTML manual pages.

This is for the automatically generated documentation at http://www.nmr-relax.com/manual/index.html,
created using latex2html. The links all require double quotes, and some a trailing '/'. The links
fixed are http://www.nmr-relax.com, http://www.nmr-relax.com/manual/ and
http://download.gna.org/relax/manual/relax.pdf.

Fix for the http://www.nmr-relax.com/windows_devel.html#MSVS_probs link at http://www.nmr-relax.com/download.html.

This was identified by the W3C link checker (http://validator.w3.org/checklink).

Removed an old wxPython link from http://www.nmr-relax.com/download.html.

Updated the numpy links at http://www.nmr-relax.com/download.html.

The new link was identified by the W3C link checker (http://validator.w3.org/checklink).

Updated the Homebrew link at http://www.nmr-relax.com/download.html.

The new link was identified by the W3C link checker (http://validator.w3.org/checklink).

Redirect fix for the http://www.python.org links at http://www.nmr-relax.com/.

The 'www' part is required to avoid a redirect. This was identified by the W3C link checker
(http://validator.w3.org/checklink).

Updated the Barnes and Noble link at http://www.nmr-relax.com/features.html for a redirect.

The new link is:
http://search.barnesandnoble.com/Protein-Dynamics-A-Study-Of-The-Model-Free-Analysis-Of-Nmr-Relaxation-Data/Edward-DAuvergne/e/9783639057621

This was identified by the W3C link checker (http://validator.w3.org/checklink).

Replacement of a Bruker link redirect at http://www.nmr-relax.com/links.html.

The original link is now a redirect, so the relax webpage has been updated to match. This was
identified by the W3C link checker (http://validator.w3.org/checklink).