Added job_status to marshmallow

- ensured statues not deleted on test runs
- returns in API call

Merge branch 'add-new-column-to-jobs-for-delayed-sending' into scheduled-delivery-of-jobs

Conflicts:
	app/models.py

tests/conftest.py

@@ -49,7 +49,7 @@ def notify_db_session(request, notify_db):
     def teardown():
         notify_db.session.remove()
         for tbl in reversed(notify_db.metadata.sorted_tables):
-            if tbl.name not in ["provider_details", "key_types", "branding_type"]:
+            if tbl.name not in ["provider_details", "key_types", "branding_type", "job_status"]:
                 notify_db.engine.execute(tbl.delete())
         notify_db.session.commit()