Refactor some common code current endpoints and tests. Update some endpoint javadoc. A few small optimizations
Enable Kryo by default
Don't send known users for items now
Remove need to iterate over all items in because, mostSurprising
Fix test compilator failure following last change
Reenable debug output from Grizzly, except in load test
Rework /ingest and add tests; still need to figure out compressed input