WCSim Validation

a8fad8eadadc74585dca8a22478fd250fd1a44dd

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

TEST_SK_5MeVem_centre_xdir

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