[PA-A] added new data based on the averaging script modified by Bernd.

BayesValidRox/tests/PA-A/data/stokesDataCalib.csv

BayesValidRox/tests/PA-A/data/stokesDataValid.csv

...x/tests/PA-A/models/stokes/averagedPressureValues_old.csv

...idRox/tests/PA-A/models/stokes/averagedVelocityValues.csv

...x/tests/PA-A/models/stokes/averagedVelocityValues_old.csv

BayesValidRox/tests/PA-A/models/stokes/averaging.py

BayesValidRox/tests/PA-A/models/stokes/averaging_old.py

...sts/PA-A/models/stokes/plots/averagedPressureValues_2.csv

...sts/PA-A/models/stokes/plots/averagedPressureValues_4.csv

...sts/PA-A/models/stokes/plots/averagedPressureValues_6.csv

...sts/PA-A/models/stokes/plots/averagedPressureValues_8.csv

...sts/PA-A/models/stokes/plots/averagedVelocityValues_2.csv

...sts/PA-A/models/stokes/plots/averagedVelocityValues_4.csv

...sts/PA-A/models/stokes/plots/averagedVelocityValues_6.csv

...sts/PA-A/models/stokes/plots/averagedVelocityValues_8.csv

...ts/PA-A/models/stokes/plots/ffpm_stokesdarcy_velocity.csv