* Replace deprecated "columns", "lines" & "tabs" properties of matrixbox by the
  shiny, better "as_cell_range_script_id"
* check that cell is not None when rendering matrixbox_quantity


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33750 20353a03-c40f-0410-a6d1-a30d3c3de9de