relax SVN archive

The Wiz_panel class now expects a parent GUI element to be set.

This is needed to prevent segfaults.

The Wiz_window.add_page() method now constructs the basic wizard layout.

The page is now the full size of the wizard dialog.

The wizard arguments are now stored as class variables.

Shifted the border from the panel into the wizard dialog.

Generating new user functions load_xyz() and __parse_models_xyz().

This is Han's patch https://gna.org/task/download.php?file_id=13247 attached to the task
http://gna.org/task/?7404.

New user functions load_xyz() and __parse_models_xyz() were generated in
generic_fns/structures/internal.py based on the functions load_pdb() and __parse_models().

Generating new system test 'test_read_xyz_internal2()'.

This is Han's patch https://gna.org/task/download.php?file_id=13246 attached
to the task http://gna.org/task/?7404.

The new system test was generated in test_suite/system_tests/structure.py for
reading a xyz file 'SSS-cluster4-new-test.xyz' with multiple models.

Modifying test_suite/shared_data/structures/Indol_test.xyz

This is Han's patch https://gna.org/task/download.php?file_id=13245 attached to the task
http://gna.org/task/?7404.

In the test_suite/shared_data/structures/Indol_test.xyz 0.00000 after the molecule name was removed.
The reason for that is because in a typical xyz file the second line is just the molecule name.

Fix for a variable name.

Missing import.