Make superuser "optional" (and assume it never dies)

Nearly reasonable, since party objects don't have it. At least fixes the
existing problems.

Conflicts:
	app/assets/service/model.js
Add 1 second to betw ingested assets; use current location in place of auto

Conflicts:
	app/ingest/json.scala
Merge branch 'production' into staging

Conflicts:
	app/assets/service/model.js
	app/ingest/json.scala