- use proxy_listbox_ids on every relation_string_field and multi_relation_string_field
- fix some small problems (like on ApparelSize_viewCustomerSize, it was not possible to enter title size because of the wrong naming of the field).

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@30748 20353a03-c40f-0410-a6d1-a30d3c3de9de