Seems not used anyway.

slapos_web: fix user ticked creation, update ticket method use proxy rule "Manager" to let user re-open closed tickets.

Add proxy rules Manager to script Delivery_manageBuildingCalculatingDelivery.
Fix condition which check if activity doesn't exists with this path, check if there is no more than one activity running where method is Delivery_manageBuildingCalculatingDelivery and path is current path.

It was always been ignored.

Because we like good editors.