Simply json responses (#25518)
Simply json responses (#25518)

Our json responses don't need to call jsonify explicitly, as flask will
do it for us. This also moves to returning a tuple to specify the status
code.
apache/airflow,nathanielvarona/airflow,nathanielvarona/airflow,nathanielvarona/airflow,apache/airflow,cfei18/incubator-airflow,nathanielvarona/airflow,cfei18/incubator-airflow,nathanielvarona/airflow,cfei18/incubator-airflow,apache/airflow,apache/airflow,apache/airflow,cfei18/incubator-airflow,cfei18/incubator-airflow,apache/airflow,cfei18/incubator-airflow,nathanielvarona/airflow