WCSim Validation

18230e0d5ef9b5c32234d862585814f2a6e24615

Pull Request #557: Feature/individual pmt dark rate

TEST_SK_5MeVem_centre_xdir

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