Shard

I ended up pulling out most of the pagination that I had in there and just stuck with broad categories of languages for now. The root path is just submissions with no nits. Ruby will still need some additional help, but this should keep most people off the really ugly page loads.

Will fix #279 

* Submissions on `/` now: 481
* Submissions on `/` after this is pushed: 68
* Submissions on `/dashboard/ruby` after push: 355

![screen shot 2013-08-03 at 12 20 36 am](https://f.cloud.github.com/assets/1697198/905039/6a267480-fbf4-11e2-8b8f-4137e30a7961.png)