Fix jshint exceptions
Fix instrumentation by not serializing streams
Fix datastore unit test
Fix field unit test
Make incomplete configurations less problematic
Don't try to generate sample data if it already exists
Adjust to worker being in different process from querybuilder
Update testshell to use environment
Only process vertex query if it has been used
Remove stray console.log
Add a central config for tests
Add commented-out BerkeleyJE Titan configuration for tests
Improve error handling in faceter

The faceter still throws NullPointerExceptions when under a heavy load,
but we don't really need to see them all.