Fix a nasty memory bug to do with modifying faces after fields have been allocated on the mesh. Start of the code to deal with mapping elements back to try to keep within the original bounding box.
Fix a nasty memory bug to do with modifying faces after fields have been
allocated on the mesh. Start of the code to deal with mapping elements back
to try to keep within the original bounding box.

rjferrier/fluidity,jrper/fluidity,rjferrier/fluidity,jjo31/ATHAM-Fluidity,iakovos-panourgias/fluidity,jjo31/ATHAM-Fluidity,jjo31/ATHAM-Fluidity,iakovos-panourgias/fluidity,iakovos-panourgias/fluidity,jrper/fluidity,iakovos-panourgias/fluidity,rjferrier/fluidity,jrper/fluidity,jrper/fluidity,rjferrier/fluidity,jjo31/ATHAM-Fluidity,jrper/fluidity,rjferrier/fluidity,iakovos-panourgias/fluidity,jjo31/ATHAM-Fluidity