relax SVN archive

Fix for the spin container list of parameters for the CR72 model.

Fixes to the specific_analyses.relax_disp modules to add support for the CR72 dispersion model.

The parameters for the CR72 model are now both correct and correctly handled.

Import fix for the lib.dispersion.cr72 module.

Initial implementation of the CR72 target function.

Added the CR72 model equations to the relax library.

This is for the Carver and Richards 1972 2-site exchange model covering all time scales.

Removed the commented out junk model code from the relax_disp.select_model user function frontend.

Updated the relax_disp.select_model user function frontend for the CR72 dispersion model.

This includes fixing the parameter list and the equations presented to the user.

Better formatting of the references for the dispersion analytic model equations.

Fix for the relax_disp.exp_type call in the Relax_disp.test_exp_fit system test script.

Removed the data pipe name check from the Relax_disp.test_hansen_trunc_data GUI test.

This makes no sense as this analysis generates a data pipe for each model (similar to the model-free
analysis).