Very minor: Beautify message list

Fixes #357 


Before:
![messages_old](https://cloud.githubusercontent.com/assets/2204549/5189207/09ec3002-74dc-11e4-8ea4-96310e52babb.png)


After:
![messages_new](https://cloud.githubusercontent.com/assets/2204549/5189214/1447ed7a-74dc-11e4-87d9-1e91f9bdc601.png)