* user which did 'deliver action' is now record on object to prevent indexation pb if his assignment change in future
* check we pass wf transition with the user assigned at the same vault as the original one

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@14675 20353a03-c40f-0410-a6d1-a30d3c3de9de