Include raven in the logging configuration in settings.py
Remove the sentry handler from the root logger in tests instead of mail_admins
Fix path to raven's SentryHandler
Merge branch 'develop' into feature/issue-864-log-messages-should-go-to-sentry-not-our-inbox
Merge branch 'feature/issue-864-log-messages-should-go-to-sentry-not-our-inbox' into develop