relax SVN archive

Fix for the reading of the sequence from generic formatted files with None in some of the columns.

The generic_fns.mol_res_spin.generate_spin_id_data_array() fn now checks for when the data list
contains 'None'.

The spin_id_to_data_list error messages are now more informative.

Clean up and fixes for the generic_fns.sequence.validate_sequence() fn.

The RelaxInvalidSeqError now prints out a more detailed message for the validate_sequence() fn.

Cleaned up the relax locking debugging print outs.

The relax controller is now colouring the status module lock and observer print outs.

More improvements to the status module debugging print outs, and the text now goes to sys.stdout.

Missing imports of the sys module.

Improvements and fixes for the debugging print outs from the status module.

Fixes for the calls to sys.stderr.write() in the objects of the status module.