(refactor) Improve styling for Queue, Form, List, and Total viewers

I've improved the styling for the video queue form, buttons, the queue list, and how the total viewers are displayed. Certainly not perfect, but a step in the right direction:

![image](https://cloud.githubusercontent.com/assets/4007936/4732120/0d42c062-59b7-11e4-90ff-5116e9caf003.png)