relax SVN archive

Added tool tips to the peak list buttons.

Rewrote exec_r1_1().

This is now called execute(), and this mimics the execution actions in auto_model_free. The
execute() method runs execute_thread() within a thread. And the relax controller is now fully
used.

Modified the data checking at the start of automatic_protocol_controller().

Deleted __do_layout() and __set_properties().

These were not being used and contained code not belonging to the automatic Rx analysis frames.

Switched to using the blue 'add' icon.

Changed the colour of the icon to match relax' blues.

Modified refresh_peak_list_display() to update the relaxation times as well.

Rewrote refresh_r1_1() into the new empty_list() method.

This simply resets the relax data store variables and calls refresh_peak_list_display().

Fix for peak_list_add_action().

The check for the list being full was not working.

Complete rewrite of the add_r1_1() method, now called peak_list_add_action().

This includes:
- The proper support for multiple file selections.
- Checks for too many peak lists.
- A new method called count_peak_lists() added.
- The refresh_peak_list_display() method written to update the GUI element at any time.