Move experimental business template to trunk.

Despite the fact this business template still under experimental, it had been used by UNG Project and UNG Configurator workflow. It this bt5 still under develepment and possible will be redesigned soon or later.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@45762 20353a03-c40f-0410-a6d1-a30d3c3de9de