- Don't revert changes before updating business template anymore. This way, we don't loose local changes when updating a BT.
- Removed "update local working copy" function because it made it too easy to revert changes committed by someone else without noticing


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@8390 20353a03-c40f-0410-a6d1-a30d3c3de9de