Fix a logical error which used listbox configuration to get default listbox style mode. Due to historical reasons this is wrong assumption and dynamic selections of columns must use system wide constant for this. This way we can define really a default list_style for listbox. Cover this with test.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@38268 20353a03-c40f-0410-a6d1-a30d3c3de9de