relax SVN archive

Added a new section called 'From spectra to peak intensities' to the Rx fitting chapter of the manual.

This adds a number of recommendations for high quality relaxation rates.

Added the Viles et al., 2001 reference.

Another fix for the relax_data.temp_control description.

Fix for the incomplete relax_data.temp_control user function description.

Spell fix for the relax_data.temp_calibration user function description.

Small description edit for the relax_data.temp_control user function.

Fixes for the referencing in the J(w) mapping chapter of the user manual.

Added a LaTeX label to the NOE chapter of the user manual.

Fixed some citations in the newly introduced model-free J(w) paragraph.

Added a paragraph to the model-free chapter of the user manual explaining the J(w) equation forms.