relax SVN archive

Fix for sync_ds().

The relaxation times were not converted to proper strings.

Initialised the list_file and relax_times data storage variables to be populated with ''.

The length is set to the hardcoded value in self.peak_list_count.

Variable abstraction.

The following GUI elements were renamed:
r1_list -> field_rx_list
r1_time -> field_rx_time

Shifted the hardcoded peak list element count from the relax data storing into the class namespace.

The file_list and relax_times structures should be dynamically updated with the 'Add' and 'Refresh'
buttons.

Built the sync_ds() method for synchronising the Rx frames and the relax data store.

The list_count variable (for the number of peak lists) is now kept in the relax data store.

The value is currently hardcoded, and the file_list and relax_times objects appropriately updated.

Deleted most of the automatic R1 and R2 analysis code from gui_bieri.relax_gui.

Shifted all automatic R1 and R2 analysis frames to use the new Auto_r1 and Auto_r2 classes.

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.