Improvements of the edge-extraction procedure

...lSheets/createFundamentalSheets/createFundamentalSheets.C

...lSheets/createFundamentalSheets/createFundamentalSheets.H

...ets/createFundamentalSheetsFJ/createFundamentalSheetsFJ.C

...ets/createFundamentalSheetsFJ/createFundamentalSheetsFJ.H

...s/createFundamentalSheetsJFS/createFundamentalSheetsJFS.C

...s/createFundamentalSheetsJFS/createFundamentalSheetsJFS.H

...meshSurfaceEdgeExtractorFUN/meshSurfaceEdgeExtractorFUN.C

...meshSurfaceEdgeExtractorFUN/meshSurfaceEdgeExtractorFUN.H

...ExtractorFUN/meshSurfaceEdgeExtractorFUNDistributeFaces.C

...y/voronoiMesh/voronoiMeshGenerator/voronoiMeshGenerator.C