Fixed bug in ele_neigh_i_tensor
Fixed bug in ele_neigh_i_tensor

Added ele_neigh_i_* to interface ele_neigh

Added missing ele_faces_tensor and node_neigh_tensor to their appropriate interfaces

New interface face_neigh which returns the neighbouring face of a given face. The incoming face number is returned if no neighbour face exists.




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