WCSim Validation

0c97ab46d844cc47c9f73a3ed5d2fd5c215cd8e9

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

IWCDOD_5MeVem_centre_xdir

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