WCSim Validation

323bb8b4373ae3f3aedacebae99dbe4352a67b2e

Pull Request #537: Update IWCD geometry

TEST_SK_5MeVem_centre_xdir

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