json-encoded configuration file for batch processes

[niksu]

The current json configuration format doesn't feel right for batch processes, as in Recap. For example see https://github.com/niksu/recap/blob/8f11121df68c29ca3dad6a5504651c18498e5a15/recap.json, where it seems unnecessary to have Recap be the lead_handler for any interfaces. Perhaps such batch processes should be started in their own thread, unrelated to any interface?