WCSim Validation

a326c496b94f7abadda93e217d19e2431b0400cf

Pull Request #547: Fixes photon timing and theta binning.

IWCDOD_500MeVmum_centre_xdir

Tests
3895.85 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom pass
bad pass
Geometry warnings pass