relax SVN archive

Removed the unused index.html.

Fix for the Rex scaling - the factor was incorrect!

Square brackets and commas are now also removed from the BMRB molecule name.

Fix for generic_fns.mol_res_spin.bmrb_read() for when no molecule name is present.

The sample_conditions arg to bmrb.read() is now set to None.

This is to allow single condition files to be always read.

The back-end of the bmrb.read() user function is now recognising the sample_conditions arg.

The bmrb.read() user function now accepts the sample_conditions arg.

The model-free bmrb_read() now accepts a sample conditions arg and checks that only one is loaded.

Created the BMRB list_sample_conditions() function to return a list of sample condition names.

The model-free bmrb module is now using the new bmrblib create_nmr_star() interface.