relax SVN archive

Converted all of the Consistency testing chapter of the user manual to the lstlisting environment.

This is for all parts of the script UI section of the chapter.

Small comment fix in the sample_scripts/consistency_tests.py script.

Converted all of the J(w) mapping chapter of the user manual to the lstlisting environment.

This is for all parts of the script UI section of the chapter.

Converted all of the model-free chapter of the user manual to the lstlisting environment.

This is for all parts of the script UI section of the chapter.

Converted all of the relaxation curve-fitting chapter of the user manual to the lstlisting environment.

This is for all parts of the script UI section of the chapter.

The NMRPipe script in the relaxation curve-fitting chapter of the manual now uses lstlisting.

The language has been explicitly set to csh to override the global default of Python.

Improvements to the script UI section of the NOE chapter of the user manual.

The lstlisting environments now have the correct numbering to match the script at the start,
comments have been copied into the split up script elements, and a few comments improved.

Started to convert the relax user manual to use the lstlisting environment for scripts.

This is to prettify the scripts in the manual.

Added the listings package to the relax user manual LaTeX file.

This will be used to improve the formatting and look of relax scripts in the manual.

Updated the grace2images.py scripts created by the relax_disp.plot_disp_curves user function.

This was discussed in bug #20916 (https://gna.org/bugs/?20916) and the change suggested in the post
http://thread.gmane.org/gmane.science.nmr.relax.devel/3953/focus=4000.

Improved that both small and big letters for image types can be used on the command line.