Update job item state when job is cancelled.

Problem/Motivation

If a job's status is changed to Rejected or Aborted the child items still have a state of active.

Steps to reproduce

• Create a job with items.
• Ensure items have a state of active.
• Set the job state to Aborted.
• See child items are still active.

Proposed resolution

When a job is saved and the state is either Rejected or Aborted the child items state should be set to Aborted.