Speakers

This is a complete rewrite of the speaker's view controller. I removed the "endless scroll" feature since it was kind of gimmicky (IMHO) and made the view controller have a proper teacup stylesheet.

![screenshot 2014-04-15 09 57 07](https://cloud.githubusercontent.com/assets/139261/2708175/3f50659e-c4a9-11e3-919d-bb096d4286b1.png)