relax SVN archive

The CSA setting in the model-free auto GUI analysis now defaults to the '@N*' spin ID.

Previously no spin ID was being used so that the protons where also having their CSA values set to
that of the nitrogens. Now the execution checking code skips the proton CSA check.

Added star versions of the standard spin IDs to the spin ID GUI element (e.g. '@N*', '@H*').

Removed some debugging printouts.

Fix for the comment on the 'Export' button in the BMRB export window.

Lots of editing of the model-free GUI section of the user manual.

Fix for bug #20197 (https://gna.org/bugs/?20197) - the PyMOL and Molmol macro failure.

The macro creation now only operates on spins called 'N' and assumes these are the backbone
nitrogens. The sidechain tryptophan indole NH data will need to be detected and added later.

Fix for the Relax_data.test_delete system test for the changes to the relax_data.read user function.

Fix for the Relax_data.test_read unit tests for the relax_data.read user function changes.

Fix to the Dasha system test needed for the changes to the relax_data.read user function.

Fix for the N_state_model.test_monte_carlo_sims due to the changed sphere.pdb test suite file.