relax SVN archive

Added a section to the end of the frame order chapter about the long computation times.

Editing of the data analysis section of the frame order chapter of the manual.

A PCS structural error figure has been added, all the text improved, and the scripts made to match
those in sample_scripts/frame_order/.

Added a 'Data analysis' section to the frame order chapter of the manual.

This includes the N-state and frame order analysis scripts required to perform a full analysis.

Added an introduction for the frame order chapter of the manual.

Added the frame order sample scripts used in the CaM-IQ analysis.

Cross-referencing fix.

Shifted the frame order model derivations into their own 'Advanced topics' chapter.

Moved the frame_order_theory.tex LaTeX file into the frame_order directory.

Added a DOI and ISBN number to the bibliography.

Added two more sections to the frame order chapter of the manual.

This includes a frame order modelling section and PCS numerical integration section. Both are from
a supplement from an in-preparation manuscript.