relax SVN archive

The BMRB icons now also have transparent backgrounds.

Made the background of the BMRB wizard graphic transparent.

This just looks better.

Created a dummy menu entry called 'File->Export for BMRB deposition'.

The back end code, which will be an export wizard, does not exist yet.

Fix for the spectrum list GUI element for a bug introduced at r16705.

The spectrum and relaxation data list GUI elements now use graphics.fetch_icon for all icons.

Renamed some of the methods in the relaxation data list GUI element.

The spectrum and relaxation data list GUI elements now use the user function definitions for icons.

Changed the relax_fit.relax_time icon to the actions.chronometer Oxygen icon.

Added the chronometer.png Oxygen icon.

Large expansion of the pop up menu for the spectral list GUI element.

This now includes most of the spectrum and relax_fit user functions.