Translations:Macro SpreadsheetTools/3/fr

Plus d'informations dans la page sur le forums: http://forum.freecadweb.org/ and particular on https://forum.freecadweb.org/viewtopic.php?f=22&t=20508&hilit=spreadsheet#p158443 and on Github on https://github.com/HoWilgh/FCSpreadsheetTools/blob/master/README.md.