relax SVN archive

Clean up of a paragraph of the data model chapter of the user manual.

Improved the consistency on the user manual by using the new LaTeX commands.

These changes are throughout the manual and affect all the text of user functions, menu items,
prompt examples, GUI elements, files, directories, etc.

Removed some '()' text from the end of the user functions in the user function documentation.

Added some more LaTeX functions for formatting consistency.

Defined a new set of LaTeX commands for prompt/script/GUI strings and elements for the user manual.

These will be used to regularize the text throughout the manual, as this is currently quite mixed
up.

More rearrangements of data model and NOE chapters of the relax manual.

The GUI spin deselection part of the NOE chapter has been shifted into the data model chapter. And
the GUI loading of spins from a sequence file section has been completed.

Added screenshots of the spin viewer spin loading wizard sequence.read page.

Redesign of the data model chapter of the user manual.

This includes the moving of all of the spin viewer window text and screenshots from the NOE chapter.

Shifted the spin viewer screenshots into their own directory.

Changed the "View->Spin view" menu item to "View->Spin viewer".