castor update EM plates, HAD plates, light guide to remove overlaps/extrusions
Updated numbering scheme to work with both old and new setup. Detects new setup by CASTFar/Near volume which have not been there in the previous geometry.
this branch should still contain non-overlap fixed xml file. wait for v3
Merge pull request #3627 from cbaus/updated-castor-geometry-seperated-halves-v2

Geometry -- Updated castor geometry seperated halves v2