relax SVN archive

Modified nesting function, to pull list of possible models from dictionary, and check if these models are
available in the completed models.

Modified unit test regarding finding correct nested model.

This was discussed in:
http://thread.gmane.org/gmane.science.nmr.relax.devel/6684
More specific, thread:
http://thread.gmane.org/gmane.science.nmr.relax.devel/6694

Modified the defined list of nesting, according to thread:

http://thread.gmane.org/gmane.science.nmr.relax.devel/6684

More specific, thread:
http://thread.gmane.org/gmane.science.nmr.relax.devel/6694

Added the ordered list of nest models to the class of model information.

Division of unit tests of specific_analyses/relax_disp/model.py into different functions.

Also added more print information to each tests.

Moved the lookup in dictionarys for model information, into the class of model info.

Added definition and dictionary, for each model, to determine which model they nest from.

This is better to Hard-code, since it makes it possible to produce a table with an overview,
and accurately determine which model is nested from.

This is discussed in thread.
http://thread.gmane.org/gmane.science.nmr.relax.devel/6684

Small verb tense fix for the descriptions of the '* R1 fit' relaxation dispersion models.

Renamed the B13 model in the manual to BK13 as the authors are Baldwin and Kay.

This is the Baldwin and Kay 2013 relaxation dispersion model for off-resonance R1rho data that is
not implemented in relax yet.

Moved the nesting lists down in variables file.