Enable catching REST exceptions in global onError
Enhancements to test setup.

Better setup/teardown of Neo4j stuff and some tweaks to DB fixture
loading. It's now possible to run 'play test' instead of the crappy
slow test script if the appropriate _JAVA_OPTIONS are set to prevent
permgen errors and set the test conf appropriately.
Merge test fixes from master.

Conflicts:
	test/helpers/Neo4jRunnerSpec.scala