style app review page summary and sidebar

**After:**

![screen shot 2013-07-22 at 2 32 24 pm](https://f.cloud.github.com/assets/674727/838171/dd8e011c-f317-11e2-8b59-157c022e600c.png)

![screen shot 2013-07-22 at 2 43 34 pm](https://f.cloud.github.com/assets/674727/838172/e1b92e2e-f317-11e2-95f3-3a0b5aa75c8d.png)

**Before:**

![screen shot 2013-07-22 at 2 32 55 pm](https://f.cloud.github.com/assets/674727/838161/cbb168bc-f317-11e2-8e38-9b7500ad7359.png)

![screen shot 2013-07-22 at 2 33 09 pm](https://f.cloud.github.com/assets/674727/838173/e630d592-f317-11e2-830b-e5d55ab7818b.png)