update french translation, todo: check why some event abbreviations and sentences are no more translated

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@22160 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6672: Gallery: 'TreePath' object does not support indexing; it also works with pygobject 3.3.2

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@22161 4ae1f11a-8b86-4847-b8af-ab372f36d1fd