relax SVN archive

Rearranged the contents of add_execute_relax().

Shifted the peak list file and time info panel into add_peak_list_selection().

The code has been simplified by the renaming of all variables and most being shifted into the local
namespace. The number of peak list elements in the panel can also be specified as an arg to
add_peak_list_selection(). The file names and times are now stored in lists to be looped over
rather than a separate variable for each.

Shifted the unresolved spin selection GUI element into the add_unresolved_spins() method.

Shifted the structure file selection GUI element into the add_structure_selection() method.

Alphabetical ordering of methods.

Shifted the results directory selection GUI element into the add_results_dir() method.

Shifted the NMR frequency selection GUI element into the add_frq() method.

Used the hardcoded self.label string for generating the 'R1' title.

Spun the self.label_4_copy_copy GUI element out into the add_frame_title() method.

'self.label_4_copy_copy' was renamed to 'label' to shift it out of the class namespace.

Removed some more 1st R1 code from the main GUI class.