Trickplay: Roster browser

**What is this?**
This feature lets the user browse a list of characters by class.

**Why do we need this?**

- A common use-case is people looking for specific classes either to form a group with, or to craft specific items
- Need a way to look at overall class composition at a glance

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![screen shot 2013-10-05 at 10 11 03 pm](https://f.cloud.github.com/assets/777999/1276051/a3fcb5ba-2e2c-11e3-813d-b53df90bdc2e.png)

![screen shot 2013-10-05 at 10 11 33 pm](https://f.cloud.github.com/assets/777999/1276052/a61e1c30-2e2c-11e3-869c-77c9f50e8798.png)