to enable setting the CSS class to each table rows.

The method is expected to receive a brain and index as the parameters
then returns a CSS class name.

And I(tatuya) attempt to use the property in the FormPrintout,
to set a style name in a ODF template explicitly.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26736 20353a03-c40f-0410-a6d1-a30d3c3de9de