now start_date column is 'delivery.start_date', so listbox_start_date should be named as listbox_delivery_start_date. same for stop_date. this change will fix following failures in erp5_project_ui_test functional tests.
* project_zuite/testSearchByStartDate
* project_zuite/testSortByStartDate


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@41586 20353a03-c40f-0410-a6d1-a30d3c3de9de