* introduced erp5_l10n_pl_PL skin for region specific scripts

- script which was removed from erp5_accounting_l10n_pl while its cleanup re-introduced (GroupPresencePeriod_setPolishHolidayExceptions)
- update to new Business Template format

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@19990 20353a03-c40f-0410-a6d1-a30d3c3de9de