relax SVN archive

Renamed return grace data function, to a better shorter name.

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].

Made the plotting function uniform into accepting both CPMG and R1rho data.

Also made a function to return data, depending if it is data, back calculated, interpolated or residual.

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].

Modified the specific_analyses.frame_order.parameters.assemble_param_vector() function.

This can now handle the case of no parameters being present. The corresponding elements of the
numpy array will consist of NaN values.

Modified the specific_analyses.frame_order.parameters.update_model() function.

This will no longer set all parameters to 0.0, excluding the pivot point.

The Frame_order.test_auto_analysis system test now writes all files to the directory of ds.tmpdir.

This is to prevent the system test from dumping files in the current directory.

Created a method in the frame order auto-analysis to reorder the models.

This is needed as the nested model parameter copying protocol requires the simpler models to be
optimised first.

Fix for the frame order auto-analysis for the call to the grid search user function.

This user function has been renamed to minimise.grid_search, however not all parts of the analysis
had been converted to the new name.

Fixes for the backend script of the Frame_order.test_auto_analysis system test.

This includes a missing import and the removal of a long ago deleted user function.

Alphabetical ordering of the imports in the frame order auto-analysis module.

Import fix for the frame order auto-analysis.