relax SVN archive

Deleted all the non-model-free code from __do_layout().

Deleted all the non-model-free code from __set_properties().

Changed the scope of the model-free variables.

These were shifted from the relax_gui module namespace into the model-free class namespace. These
will eventually be shifted into the relax data store if any of these are not hardcoded.

Shifted panel_4 into the model-free class.

This seems to be the model-free panel!

Re-added the import of gui_bieri.paths.IMAGE_PATH.

Fixed the gui_bieri module imports.

Removed all the unused imports.

The main GUI class instance is now passed into the Auto_model_free class.

This will create a nested object tree structure so that all parts of the GUI can access all other
parts.

The self.modelfree GUI panel is now passed into Auto_model_free.

Started to spin off the automatic model-free protocol GUI code into its own module.