relax SVN archive

Shifted a number of the image path variables from the gui.paths module to the graphics package.

Whitespace fix.

The user function GUI menu item is now being auto-generated.

This will require future work to support user functions not within a user function class.

The graphics.fetch_icon() function now returns None if no icon is specified.

Created the graphics.fetch_icon() function for a better API for the icon paths.

This will eventually replace the gui.paths module.

The graphics directory has been converted into a Python package.

This will be used to store special functions related to graphics manipulation, retrieval, etc.

Renamed the gui.user_functions package to gui.uf_pages to avoid import clashes.

This package was clashing with the base user_functions package, breaking imports everywhere.

Started to write the auto-generated user function GUI menu.

Created methods for returning user function and class data objects from the user function data object.

These are called get_class() and get_uf().

Fix for the bmrb.citation user function prompt front end.

The status argument was hiding the relax status singleton object!