Updated the relax results for the Fyn SH3 R1rho dispersion data.

This is for the recent changes to the 'NS R1rho 2-site' dispersion model.
Updated the Relax_disp.test_ns_r1rho_3site_linear system test so it now passes.

The chi-squared value is not exactly zero as there are numerical differences between relax and
cpmg_fit due to different approaches being used.
Added the RMSD determined via showApod for the 69 experiments.

Work in progress for Support Request #3083, (https://gna.org/support/index.php?3083) -  Addition of Data-set for R1rho analysis.
Added system test for the analysis of optimisation of the Kjaergaard et al., 2013 Off-resonance R1rho relaxation dispersion experiments using the 'DPL' model.

Work in progress for Support Request #3083, (https://gna.org/support/index.php?3083) -  Addition of Data-set for R1rho analysis.
Modified analysis script for example data of R1rho.

Work in progress for Support Request #3083, (https://gna.org/support/index.php?3083) -  Addition of Data-set for R1rho analysis.
Created synthetic R1rho dispersion data for the 'NS R1rho 3-site' model.

This is a simple modification of the data for the 'NS R1rho 3-site linear' model.  The k_AC
parameter was simply changed from 0 to 1000.  The cpmg_fit software was used to create the data.
Both cpmg_fit and relax results have been updated to the new model.