WCSim Validation

ad388e1d1a09864b952e6982a0d1243cab4ecc2a

Pull Request #486: Fixes bug in OD PMT orientation

HKFDOD_500MeVem_centre_xdir

Tests
10482.15 sec
Failed wcsimrootevent plot comparisons
Failed wcsimrootevent2 plot comparisons
wcsimrootevent_OD plot pass
Geom
bad pass
Geometry warnings pass