add unsubscribe link to bottom of email digest
add filter on activities passed in email
add mandrill production config
add rake task to send single weekly digest email based on user id
add host to production smtp config
add host only_path false and move mandrill env vars to secrets
fix typo in secrets
use correct name of env var
add 'time-ago' to activity feed
merge theming-touches into master
Merge branch 'master' of github.com:PixelCrafters/StartupHealthCheck