relax SVN archive

Re-ordered the B14 model according to release year.

sr #3154: (https://gna.org/support/?3154) Implementation of Baldwin (2014) B14 model - 2-site exact solution model for all time scales.

"This follows the tutorial for adding relaxation dispersion models at:
http://wiki.nmr-relax.com/Tutorial_for_adding_relaxation_dispersion_models_to_relax#Adding_the_model_to_the_list"

The B14 model is explained in: http://wiki.nmr-relax.com/B14.

Fix for bug #22002, the failure of the Library.test_library_independence software verification test.

This is reported at https://gna.org/bugs/?22002.

The fix was simply to use the relax installation path in the status singleton object to make sure
that the relax 'lib' directory can be found independently of what the current working directory is.

Fix for bug #22001, the execution of script changing the current working directory.

This is reported at http://gna.org/bugs/?22001.

The changing of the current working directory (CWD) was added to allow for nested scripting.
However this is no longer needed as the script import mechanism has changed from the exec() function
call to the runpy Python module.

Added the software verification tests to the relax GUI.

The verification tests can now be selected via the "Tools->Test suite->Verification tests" menu
entry. Running the full test suite via the menus also now included the verification tests.

Docstring update for the test suite runner class - the verification tests are now listed.

Made a generic script to generate R2eff data for a CPMG model based on spin parameters, and fit the data.

Still needs to implement some noise method.

1) The idea is to generate R2eff data with a numerical model with some extreme parameters.
2) Then add noise to the R2eff data.
3) Then fit with a analytical model.

Evaluate the performance on the analytical model.
This follows the idea of the paper:

http://dx.doi.org/10.1016/j.jmr.2014.02.023
"An exact solution for R2,eff in CPMG experiments in the case of two site chemical exchange"
Andrew J. Baldwin, Journal of Magnetic Resonance, 2014

The script can be extended to also include global fitting, to test this out.

The script is also ideal, when trying to implement a new model, since test-data is ready at hand.

Removed the standard transparent "on" setting in grace images script file.

This was rather an annoyance than helpfull.

Removed MODEL_B14 to be tested in normal setup.

sr #3154: (https://gna.org/support/?3154) Implementation of Baldwin (2014) B14 model - 2-site exact solution model for all time scales.

This is to allow the systemtest to pass.

Added Baldwin model B14 test data.

sr #3154: (https://gna.org/support/?3154) Implementation of Baldwin (2014) B14 model - 2-site exact solution model for all time scales.

Implemented start systemtest for model B14.

sr #3154: (https://gna.org/support/?3154) Implementation of Baldwin (2014) B14 model - 2-site exact solution model for all time scales.

Systemtest is Relax_disp.test_baldwin_synthetic.