relax SVN archive

Increased the size of the unit vector loading wizard in the model-free analysis.

This now matches the structure.read_pdb user function size and allows it to fit!

The min length is now handled much better in the Combo_list GUI input element.

The GUI user function object create_wizard() method now returns True upon success.

This is needed for calls to these objects!

The GUI user functions now called by the results viewer window now have the parent set to this window.

The GUI user function page update_args() method now has a docstring and returns True when successful.

Rearranged the spin.name args and converted the spin ID to the special spin ID type.

Prevention of multiple RelaxErrors from the user functions.

The update_args() method returns False if an error occurred on updating the list of choices for an
arg. This is now caught by all parts of the code where it is called, preventing further execution.

Improvements to the structure.load_spins user function definition.

The spin_id arg now uses the special 'spin ID' arg type for the spin ID GUI input element.

A number of improvements for the spin ID GUI input element.

This includes:

- The fix of r16541 for the use of SetValue() for strings not in the list of choices.

- Defaulting the choices to ['@N', '@C', '@H', '@O', '@P'] if not supplied.

- A tooltip white space fix.

- Removal of the None element in the list of choices, as this is not a read only box.

Increased the size of the spin loading wizard to match that of structure.read_pdb.