Fix up issues caused by merge

- statistics now on job_json
- removed test that validates we handle the case where job has no statistics key - never happens

tests/__init__.py

@@ -178,6 +178,7 @@ def job_json(
         'notifications_sent': notifications_sent,
         'notifications_requested': notifications_requested,
         'job_status': job_status,
+        'statistics': [],
         'created_by': created_by_json(
             created_by.id,
             created_by.name,