Merge branch 'DoxygenFixes' into 'master'

Applications/FileIO/GocadIO/Layer.cpp

Applications/FileIO/GocadIO/Layer.h

GeoLib/AnalyticalGeometry.h

MathLib/LinAlg/Eigen/EigenTools.h

MeshLib/Elements/MapBulkElementPoint.cpp

MeshLib/Elements/MapBulkElementPoint.h

MeshLib/IO/XDMF/XdmfData.h

MeshLib/IO/XDMF/transformData.h

MeshLib/Mesh.h

MeshLib/MeshEditing/DuplicateMeshComponents.cpp

MeshLib/MeshEditing/DuplicateMeshComponents.h

MeshLib/MeshEditing/FlipElements.cpp

MeshLib/MeshEditing/FlipElements.h

MeshLib/MeshEditing/ProjectPointOnMesh.cpp

MeshLib/MeshEditing/ProjectPointOnMesh.h

MeshLib/Vtk/VtkMeshNodalCoordinatesTemplate-impl.h

MeshLib/Vtk/VtkMeshNodalCoordinatesTemplate.h

ParameterLib/FunctionParameter.h