Update line's destinations: exchanged multilated banknotes end up on counter's vault, not in a general vault.
Fix states in which line's destinations are not None (incomming banknotes were kept for too long in incomming vault).
Remove a missplaced (and duplicated) workflow transition.
Set start dates on exchanged and outgoing lines.
Set stop date on main document.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@18929 20353a03-c40f-0410-a6d1-a30d3c3de9de