[16.0] Add support to show job progress

[aliencrash]

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One off challenges using the job queue is to be able to show for a related model that a task is running in job queue. The user has to wait if something went all right or wrong to be able to access the result.

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If we queue a job after pressing a button we could have in the form view of the related model a widget to show the queue task as a progress of a enqueued or running task. Maybe using the activities to show enqueue tasks.

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