update translation strings index

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21440 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
update template

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21441 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
quick test and update on the french translation

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21442 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
slightly reformat error message

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21444 4ae1f11a-8b86-4847-b8af-ab372f36d1fd