This module adds state, date_start,date_stop and delay in production order operation lines (in the "Workcenters" tab) State: draft, confirm, done, cancel When finishing/confirming,canceling production orders set all state lines to the according state. Create menus: Production Management > All Operations Production Management > All Operations >Production Orders to Do (State=Confirm) Production Management > All Operations >Waiting Production Orders (state=Draft) Which is a view on "Workcenters" lines in production order,editable tree Add buttons in the form view of production order under workcenter tab: * start (set state to confirm), set date_start * done (set state to done), set date_stop * set to draft (set state to draft) * cancel set state to cancel When the production order becomes "ready to produce", operations must become 'confirmed'. When the production order is done, all opera