relax SVN archive

Fix for the gui_to_int() function for when a text instead of an int is given by the user.

Clean up of the Create_page.on_execute() method.

The gui_to_*() functions are now being used for the spin information.

Removal of a debugging print out.

Copyright updates.

Bug fix for the spin.create user function GUI interface for when molecules or residues are not named.

Unnamed molecules are now properly handled in the GUI page, and the residue name of None is properly
converted into a NoneType prior to executing the back end.

Big bug fix for the deletion of analyses tabs from the GUI!

This affects wxGTK users on Macs and Linux. Now the spectrum and relaxation data list GUI elements
have observer_register() methods, allowing the analysis delete_all() method to unregister all
analysis specific methods from the observer objects. This prevents queued wx calls to be made on
dead or non-existent GUI objects after the analysis has been deleted. wx.Yield() calls were not
sufficient to solve this issue.

The GUI analyses delete_all() method now unregisters all observer methods prior to deletion.

Multiple unregistrations of observer methods are now possible without a RelaxError.

This allows multiple code paths to unregister methods to allow for pre-removal of methods to avoid
queued wx events in wxGTK from occurring on dead or missing objects.

Created observer_register() for all GUI analyses for method registration and unregistration.

This method allows for external calls to observer_register() to pre-remove the methods from the
observer objects.

Added debugging print outs to the delete_all() analysis method.