power_deviation_matrix_configuration.py getBin does not use binning.Bins Class

This is inconsistent with the Binning Class structure and is confusing. 

`def getBin(self, dimension, value):
        return round(round((value - dimension.centerOfFirstBin) / dimension.binWidth, 0)
                     * dimension.binWidth + dimension.centerOfFirstBin, 4)`

This should use the binning.Bins Class. 