relax SVN archive

Created a directory for screenshots of the spin viewer window operation.

Fix for the spin.create user function documentation - the prompt examples were wrong.

The NOE auto-analysis GUI test now checks the support for Trp indole N data as well.

The spectrum.read_intensities user function now prints out a list of the intensities read in.

This is for better user feedback as to what the user function has actually done.

Created the GUI wizard _apply() method for executing the current page's _apply() method.

This is for the GUI tests to simulate a click on the 'Apply' button.

Bug fix for the generic_fns.grace.get_data() function.

This was just recently introduced and was triggered by the Relax_fit.test_bug_12670_12679 system
test.

Fix for bug #20120 (https://gna.org/bugs/?20120), the bad Grace plots with multiple spin types.

The grace data assembly function was not setting the correct index for when a spin type changes to a
preexisting type.

Removed a debugging print out.

Modified the NOE system test to catch bug #20120 (https://gna.org/bugs/?20120).

Lots of editing of the NOE chapter of the user manual.