relax SVN archive

Added systemtest Spectrum.test_grace_sn_ratio to help implement plotting the signaÃl to noise ratio per residue.

Added systemtest Spectrum.test_grace_int, to test plotting the intensity per residue.

This is to prepare for a grace plotting of the signaÃl to noise level per residue.

Also added additional tests for signal to noise ratio calculation in the systemtest Spectrum.test_signal_noise_ratio.

Added the pipe_control.spectrum.signal_noise_ratio() backend function, for calculation of the signal to noise ratio per spin.

Added user function spectrum.sn_ratio to calculate the signal to noise ration for all spins.

Added the systemtest Spectrum to the init file, so the systemtest can be executed.

Initialised first test in systemtest Spectrum.

This is simply loading some intensity data, and checks data.

The systemtest test Spectrum.test_signal_noise_ratio will be expanded to test the calculation of the signal to noise ratio.

Copy of the systemtest peak_lists.py to spectrum.py

This is for the implementation of calculation of signal to noise ratio, anotting, se?l?ecti and deselection.

In pipe_control.spectrum.error_analysis_per_field() removed the checks which would stop the calculation of the errors.

This function will now always run, which will make it possible for the user to try different error calculations.

Re-inserted the error_analysis() function in the auto class of relaxation dispersion.

This function only checks if the error analysis has not been be performed before, and then decides to call
the user function spectrum.error_analysis_per_field().

The implementation can be tested with.
relax -d -s Relax_disp.test_estimate_r2eff_err_auto

In the auto_analysis.relax_disp(), used the new userfunction spectrum.error_analysis_per_field() to calculate the peak intensity errors.