relax SVN archive

Bug fix for the Value GUI input element for integer values.

This is only uncovered when remotely running the GUI - e.g. through the test suite - and an integer
value is set.

Fixes for the spin.create user function for GUI usage.

Fixes for the J(w) mapping and consistency testings scripts so they can run as GUI tests.

Fix for the spin.copy user function for GUI use.

Fix for the state.load user function for pickled files - _back_compat_hook() is now blacklisted.

Refinement and fixes for the Relax_data_store._back_compat_hook() method.

Small fix for the Relax_data_store._back_compat_hook() method.

Better backwards compatibility of old relax results and state XML files for the interatomic design.

The MoleculeContainer._back_compat_hook() method has been shifted into the
Relax_data_store._back_compat_hook() method. This allows the spin containers with attached protons
to be converted (with new spin containers for the attached protons added) after loading of the XML
state.

Converted the bruker.read user function to the interatomic data design.

Converted the Angles.test_angles() system test and associated script to the interatomic data design.