Wiki Part 2!

#### What's changed?

* Cleans up the review page w/ diffs
    ![](http://cl.ly/image/232Z0t3q1r2i/Image%202014-11-15%20at%205.48.28%20pm.png)
* Updated edit modal to fit more data
    ![](http://f.cl.ly/items/1N2j3T1x00130t1o2k42/Image%202014-11-15%20at%207.08.52%20pm.png)
* Allows users to add/edit YouTube trailers
`poster_image` and `cover_image` aren't actually attributes on the `anime` model, therefore those variable names aren't included in the `.changes` hash.