relax SVN archive

Made build_menu_sub_item() more flexible in that the icon or text is now optional.

Bug fix for the loading of the relax save state.

This is only fixing a bug in the current hardcoded design and will not be needed if the GUI is made
more dynamic.

Fix for the peak list selection, the file names are now converted to strings before storage.

Shifted the peak list selection GUI component used in the R1 and R2 into its own class.

This was discussed at https://mail.gna.org/public/relax-devel/2010-01/msg00093.html (Message-id:
<7f080ed11001290600h42a4dd0lfc05bbf5889816e4@...>).

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.