fcrepo4/fcrepo4 — pull request #396 by escowles (2014-05-27 22:40:46+00:00)
Title: SPARQL-Update error handling

* queries that reference non-existent resources return 400 Bad Request
* fixing empty query error handling (all 400 Bad Request)
* adding ITs for these two cases

Fixes https://www.pivotaltracker.com/story/show/71903492