Changed the selectors passed to createDWP

![hide-the-tree-in-chrome](https://cloud.githubusercontent.com/assets/5025722/4429780/1cfd350a-4602-11e4-8571-74f54f892741.png)

I left a comment in the duolingo discussion thread https://www.duolingo.com/comment/2950466

It seems as the selector for the badges don't work anymore, at least for me I can't see any badges on my friends so I'm assuming they got removed. This change just uses a different selector.

I tested this in Chrome. I don't know how it originally looked since the badges were removed and I couldn't test it. The tree hide/show button is now at the top in its own div.