* Opened files are closed properly after writing in the final_data_extraction.py sample script.
* If no diffusion tensor is present, creation of diffusion pdb will be skipped (final_data_extraction.py sample script).
* Updates for the Dasha [[DASHA]] sample script for the current version of relax.
* Updates for the diffusion tensor optimization sample script for the current version of relax.
* Some fixes for the subprocess.Popen() calls on MS Windows.