Set up New Relic, using steps from https://devcenter.heroku.com/articles/newrelic#add-the-new-relic-agent-as-a-scala-sbt-play-2-dependency
AB testing updated to be stateless and calculated at request time
New API to submit identifier for a survey response
Add documentation
Add health ID encryption backfill
Updating so that user-supplied GUID (now identifier) only scoped to a participant
Switching to use randomness of GUIDs which we already have
Merge pull request #350 from alxdarksage/studies

Add an admin group when creating a new directory.
Merge pull request #351 from alxdarksage/ab-testing

AB testing updated to be stateless and calculated at request time
Merge pull request #352 from alxdarksage/survey-responses

New API to submit identifier for a survey response
Merge remote-tracking branch 'base/develop' into develop
This test can fail due to randomness. Making more robust
Cleanup
Cleanup
Merge pull request #353 from alxdarksage/survey-responses

Survey responses
Refactor distributed lock
Merge remote-tracking branch 'base/develop' into develop
Remove user lock DAO
Add RedisDistributedLockDaoTest
Rename methods