Results page pagination

WHAT?
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The results page can be slow to load, because it's loading every result ever. I've changed this to paginate instead.

HOW?
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I've used [kaminari](https://github.com/amatsuda/kaminari) for the pagination. The controls are fairly basic, but functional (fits in with the rest of the site?). It uses the (kaminari) default page size of 25 models. Looks like this:

![screen shot 2014-02-05 at 10 48 40 pm](https://f.cloud.github.com/assets/111963/2093354/b8a2263a-8eb7-11e3-841c-81a0286b2273.png)

There's an integration test to go with it as well.