WCSim Validation

d51d83b5333437013b90c6a14ee50821f5f80eca

Pull Request #486: Fixes bug in OD PMT orientation

SK_5MeVem_centre_xdir

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