relax SVN archive

Edits to the abbreviations chapter of the relax user manual.

Added another abbreviation.

Expansion of the abbreviations chapter of the relax user manual.

Added a tonne of DOI numbers to the relax user manual bibliography.

This will simplify accessing these references for the user.

Added and fixed DOI numbers for many bibliographic entries.

Added links for all abstracts via DOI numbers on http://www.nmr-relax.com/refs.html.

The LaTeX bibliography style for PhD theses now includes the DOI hyperlink.

This is for the user manual.

Slight modification of the DOI hyperlink formatting bibliography style for the user manual.

Modified the relax LaTeX bibliography style file relax.bst to convert DOI numbers to hyperlinks.

This is to add links to the references within the relax user manual.

Created the new 'Citations' chapter of the relax user manual.

This is to clearly outline to the user the citations required for the various components of relax.