WCSim Validation

b10103ee5b6fac9171d5affcd103114bb56c9ffc

Pull Request #540: add FDOD PMTs and set PMT3inchR14374_FDOD as default choice

HKFD_500MeVem_centre_xdir

Tests
9879.22 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom
bad pass
Geometry warnings pass