* add new transition to display Re Assign in workflow action
* Bug Notification can be send later to change recipient list
* Add File dialog require missing mandatory fields
* New worklist on bug_evnt_worklow to display planned Bug Line

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@23350 20353a03-c40f-0410-a6d1-a30d3c3de9de