relax SVN archive

The relax_fit.py sample script deselect.read user function now has all columns specified.

This is a partial response to bug #19717 (http://gna.org/bugs/?19717) reported by Martin Ballaschk
(http://gna.org/users/mab).

Improved the error message system for the spin ID matching multiple spins

This is a partial response to bug #19717 (http://gna.org/bugs/?19717) reported by Martin Ballaschk
(http://gna.org/users/mab).

The select.spin and deselect.spin uf args spin_id can be None!

Removed the leading whitespace from the colour module documentation variables.

All leading whitespace is stripped from the docs before creating the auto-generated uf description.

The detection of the end of the table has also been simplified, as stripping the whitespace broke
the logic.

Fix for the Molmol wizard graphic paths.

Fix for the auto-generated GUI user function descriptions.

The additional documentation was not passing through the process_doc() method, and hence was not
being formatted for the wx.Text element. This was making the tables look very ugly!

Fix for the Selector_dir class - the default of None needs to be converted to wx.EmptyString early.

This was causing TypeErrors in the wizard pages.

The simple Value wizard page element default for an integer is now a wx.SpinCtrl.

If the element_type arg is set to 'default' and the data type is integer, then a wx.SpinCtrl will be
used.

Whitespace clean up.