Changes to allow the methods that interface to Rhino API to return string info describing any failure.
Mimicked the previous change in the Rhino call to Publish (previous check in was for Ingest)
keep minion from barfing when there is long output from error stack traces.

this simply cuts the output at the limit for the size of simple db values.  the
remaining chunk is lost (would take some work to chop and iterate multiple items)