relax SVN archive

Bug fix for the free-rotor isotropic cone frame order model.

The cone_theta parameter is not an optimised parameter, but a Monte Carlo '*_sim' data structure
needs to be set up for it.

Added some code to allow for results visualisation in the frame order auto-analysis.

This creates the 'cone.pdb' file representation of the motion and a relax script for launching the
visualisation later on.

Created PCS subset files for some of the CaM frame order test data.

Updates to the CaM frame order test data auto-analysis script.

Added a basic class docstring for the frame order auto-analysis.

Docstring edits for the frame order auto-analysis.

The Monte Carlo simulation optimisation in the frame order auto-analysis can now be changed.

The number of Sobol' points for PCS numerical integration and the function tolerance can now be set
by the user.

Expansion of the variable check for the frame order auto-analysis.

Updated the frame order auto-analysis __init__() docstring to describe all input arguments.

The function tolerance for optimisation can now be set in the frame order auto-analysis.

As the numerical integration using Sobol' points is not very accurate, an function tolerance of
1e-25 makes no sense. Especially in the first steps with extremely low precision. This change
allows the optimisation to be significantly speed up.