relax SVN archive

Fixes for the Relax_disp.test_r2eff_read_spin system test.

Fixed a typo in the user function name in the Relax_disp.test_r2eff_read_spin system test.

Fix for a duplicated line typo in the Relax_disp.test_hansen_cpmgfit_input system test.

Fixes for all of the Relax_disp system tests which use Flemming Hansen's CPMG data.

These are needed due to the improved error estimates in the data files.

Fixes for the Relax_disp.test_hansen_cpmg_data_auto_analysis* system tests.

The Relax_disp.test_hansen_cpmg_data_auto_analysis system test needed updating due to the more
accurate R2eff errors. The Relax_disp.test_hansen_cpmg_data_auto_analysis_r2eff system test also
needed this change. It also no longer has a spin system for residue 4.

Fix for return_index_from_disp_point() for when R2eff/R1rho data is loaded rather than intensities.

This specific_analyses.relax_disp.disp_data.return_index_from_disp_point() function was always
subtracting 1 from the dispersion point index to take the reference spectrum into account. This
however fails if R2eff/R1rho data is loaded instead.

Improved the R2eff errors for Flemming Hansen's CPMG data.

The errors are now calculated using the data from all spins rather than a truncated subset. The
errors will therefore be much more accurate.

Missing imports.

Fixes for the Monte Carlo simulations in the dispersion analysis when R2eff data has been read.

As peak intensity data has not been read, the relaxation time period will not have been set. The
_back_calc_r2eff() method can now handle this.

The relax_disp.insignificance user function can now handle selected spins with no R2eff/R1rho data.