WCSim Validation

45cfcafb207885cf788c6b7a43fc01e0a01637c5

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

HKFD_500MeVem_centre_xdir

Tests
9875.48 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom
bad pass
Geometry warnings pass