update template before beta, merge some translation strings from 3.4.x (french)

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21866 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
fix python3 error and improve upgrade text


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21868 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
More exception text


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21870 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6591: converted bytes of media in a string to show in quickview


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21872 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6590: gramps40 asciidoc.py crashes for at least some reports


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21874 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
formatting cleanup


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21876 4ae1f11a-8b86-4847-b8af-ab372f36d1fd