sensitivitySpiderPlot - absolute values in x axis

[PavelBal]

Along the same lines, it would be helpful (but less critical for me at the moment) to do the same for the x-axis and make the normalization optional. the absolute values are here also already available in the sensitivity calculation output data frame in the column "ParameterValue"

These options can give weird-looking and unhelpful plots if you put multiple parameters at the same time, but they can be helpful to plot the same parameter in different scenarios