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Changes
Improved link formatting.
* Created the Structure.test_create_diff_tensor_pdb system test. This is to show the failure of the [http://www.nmr-relax.com/manual/structure_create_diff_tensor_pdb.html structure.create_diff_tensor_pdb user function] when no structural data is present.
* Created the Structure.test_create_diff_tensor_pdb2 system test. This is to catch another situation leading to [https://gna.org/bugs/?22505 bug #22505, the failure of the structure.create_diff_tensor_pdb user function when no structural data is present].
* Added an optimisation script for the test_suite/shared_data/diffusion_tensor/ellipsoid relaxation data. This is to help catch [https://gna.org/bugs/?22502 bug #22502, the geometric prolate diffusion representation does not align with axis in PDB], as reported by Martin Ballaschk ([https://gna.org/users/mab)Martin Ballaschk]. The PDB files of the optimised tensor demonstrate exactly the same problem as seen in the files attached to the bug report. The oblate and spherical diffusion tensor representations match that of the ellipsoid. But the prolate axis and tensor orientation are both different from the ellipsoid as well as themselves.
* Updated the diffusion tensor PDB representation files. This replaces the broken prolate representation with the corrected representation.
* Deleted the duplicated Structure.test_create_diff_tensor_pdb system test.