relax SVN archive

Added check function to plot_disp_curves, to check that CPMG exptypes are not interpolated against offset, which is not implemented.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].

Added check function for relax_disp. This function check if interpolating against offset for non-R1 exp types, and will raise an Error.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].

Added the 'B13' and 'B13 full' dispersion models to the to do section of the manual.

The B13 dispersion model is now properly added to the software comparison table.

Added Andy Baldwin's 2013 R1rho relaxation dispersion model to the manual.

The model has been added to the table of dispersion models and to the dispersion software comparison
table of the dispersion chapter of the manual. The citation has also been added to the
bibliography.

Fix for forgotton removal of counter.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].

Moved graph files up one level in systemtest.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].

Fix for systemtest, after movind graphs to check against.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].

Fix for desc_short, in user function relax_disp.plot_disp_curves.

The text "The " is preformed in the formatting.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].

Fix for GUI text in MS Windows, since subscript 1, and greek theta symbol is not working in this unicode system.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].