relax SVN archive

Created the Frame_order.test_cam_iso_cone_free_rotor2 system test.

This is the isotropic cone, free rotor frame order model with a tilted central axis.

Implemented the Frame_order.test_cam_iso_cone_free_rotor system test.

Fix for the iso_cone_free_rotor.py system test script.

The average position alpha Euler angle is not defined in this model.

Fixes for the free rotor frame order model system test scripts.

The average position alpha Euler angle is not defined in these models!

Added a system test script for the iso cone, free rotor frame order test data.

Added Monte Carlo simulations to all the frame order model optimisation test scripts.

Created a second iso cone, free rotor frame order model - this time with a tilted axis.

The centre of the distribution is an axis tilted 15 degrees from the pivot-CoM vector.

Fix for the pymol.cone_pdb user function for frame order models with no alpha average pos angle.

This is specifically for the isotropic cone, free rotor model. But other models might also be
affected by this fix.

Removed the back_calc.bz2 save file as it is far, far too big!

Changes for the isotropic cone, free rotor frame order test data.

The distribution of structures consists of 5000 rather than 500 models now, so the PDB file is no
longer stored. This number is needed to properly sample the space. Monte Carlo simulations have
also been added.