Singly/hallway — pull request #753 by kristjan (2013-01-04 23:29:32+00:00)
Title: Sync Direct Messages from Twitter

This pulls both sent and received messages into
`/services/twitter/direct_messages`, though Twitter has two separate endpoints
for them. We'll perhaps want to add a sent/received filter to our endpoint
later, but I think putting them in one place is an easier access pattern and
differentiating is trivial on the application side.