relax SVN archive

Bug fix:

Removal of a bug introduced in the last commit. The bug is in the results writing function and
was because the model-free parameter simulation data structure was being tested for the value 'None'
rather than the elements of the data structure.

Bug fixes:

Removed a bug from 'generic_fns/value.py' whereby 'self.general' was being called rather than
'self.relax.general'.

Removed a bug from 'specific_fns/model_free.py' whereby the results writing function was trying to
scale order parameter values of None.

Bug fix:

Changed the 'elsif' statement on line 335 to an 'if' statement to begin the elsif block.

Updated the specific function files 'jw_mapping.py', 'relax_fit.py', and 'noe.py' for Grace
plotting.

The functions 'return_conversion_factor', 'return_grace_string', and 'return_units' have all been
added to make these classes work with the Grace plotting function.

Addition of the specific function 'return_grace_string'.

The function has been added to the files 'model_free.py' and 'jw_mapping.py' in the 'specific_fns'
directory, and has been made accessible in the specific setup file. The purpose of the function is,
when supplied the data type, to return a string formatted in Grace's typesetting syntax. That way
parameter names can be displayed on the Grace axes as Greek text, superscript, subscript, italics,
or any other Grace format.

The file 'specific_fns/jw_mapping.py' has also had the 'return_data_name' function expanded to
include the spectral densities themselves.

Modified the appearance of the Grace plot.

The settings in the Grace header function have been tweaked.

Rename of the function 'get_data_name' to 'return_data_name'.

Modification of the Grace plotting functions such that minimisation statistics can now be plotted as
well. This includes plotting of statictics for Monte Carlo simulations. Two dummy functions
'return_conversion_factor' and 'return_units' were added to 'generic_fns/minimise.py' so that the
use of these does nothing to the statistics.

Addition of functions to return minimisation statistics. The two functions 'return_value' and
'get_data_name' have been added to 'generic_fns/minimise.py' to return the value of minimisation
statistics.

The function for resetting the minimisation statistics, 'reset_min_stats', has been moved from
'generic_fns/value.py' to 'generic_fns/minimise.py' and has been expanded for resetting global
statistics.