Merge branch 'feature/new_mpi_comm_pugs' into feature/reproductible-sums

src/language/modules/MeshModule.cpp

src/language/modules/MeshModule.hpp

src/mesh/CMakeLists.txt

src/mesh/Connectivity.cpp

src/mesh/ConnectivityDispatcher.cpp

src/mesh/DiamondDualConnectivityBuilder.cpp

src/mesh/Dual1DConnectivityBuilder.cpp

src/mesh/GmshReader.cpp

src/mesh/IInterfaceDescriptor.hpp

src/mesh/LogicalConnectivityBuilder.cpp

src/mesh/MedianDualConnectivityBuilder.cpp

src/mesh/MeshEdgeBoundary.cpp

src/mesh/MeshEdgeBoundary.hpp

src/mesh/MeshEdgeInterface.cpp

src/mesh/MeshEdgeInterface.hpp

src/mesh/MeshFaceBoundary.cpp

src/mesh/MeshFaceBoundary.hpp

src/mesh/MeshFaceInterface.cpp

src/mesh/MeshFaceInterface.hpp

src/mesh/MeshNodeBoundary.cpp