* 12794 change User ref to get_user_model
* 12794 call get_user_model once in tests
* 12794 call get_user_model once in tests
* 12794 use settings.AUTH_USER_MODEL for FK reference
* Reference database object by GFK when running scripts & reports via UI
* Reference database object by GFK when running scripts & reports via API
* Remove old enqueue_job() method
* Enable filtering jobs by object
* Introduce ObjectJobsView
* Add tabbed views for report & script jobs
* Add object_id to JobSerializer
* Move generic relation to JobsMixin
* Clean up old naming