WCSim Validation

ab46dd386d01df6f77acd272d40ae750fbcfb0ca

Pull Request #569: Fix radon activity normalization

SK_500MeVem_centre_xdir

Tests
3205.99 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom pass
bad pass
Geometry warnings pass