Remove deprecated methods reported by test suite run
Extract deliverable behavior of Notifications to observer

While fixing the bug of Notifications being asynchronously sent to
Sidekiq before persisted to the database, moves deliveries to
observer.
Use randomic email in user factory
Describe existing specs
Use single quotes
Move calculation of user completeness to commit callback
Merge pull request #571 from neighborly/im-notifications

Extract deliverable behavior of Notifications to observer