relax SVN archive

Added a flag to the status singleton object to signal if text output can be coloured.

This is only activated when sys.stdout has not been changed. Unix redirection and pipes will need
to be handled later (http://mail.python.org/pipermail/python-list/2012-April/1291044.html).

Fix for the residue.create user function GUI front end along the same lines as the spin.create fn.

The unnamed molecules are now properly handled, and the gui_to_*() methods are now used for data
conversion.

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.