BF: fix automated import of gamma for known monitors

In version 1.80.00 there was a bug for certain monitor objects due to
confusion between getGamm() and getGammaGrid()

Now getGammaGrid() takes preference, but getGamma() is used as fall-back and
tests have been added to the test suite to prevent any further regression
on this
ENH: added demo for CRS bits_sharp and a script to run getLumSeries from monitors