relax SVN archive

Created the new automatic R2 analysis frame.

This operation is pretty simple as it is almost identical to the R1 frame, and all the contents are
in the base class Auto_rx.

Bug fix for state_save().

The analysis frame was not properly referenced.

Clean up of the resdir_r1_1() method including renaming to results_directory().

A docstring and many comments have been added. The relax data store is also now being used.

Shifted the execute GUI element into the add_execute_relax() method.

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.