* add z_related_financial_section_category, z_related_function_category and z_related_group_category catalog methods from erp5_budget.bt5
* add groupCategory, financialSectionCategory and functionCategory related keys from erp5_budget.bt5


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@4046 20353a03-c40f-0410-a6d1-a30d3c3de9de