fixing bookmarks and blockquotes for mobile

The bookmark icon now changes colors appropriately, and blockquotes have controls in the right place. I also removed the blockquote margin because it was kind of nuts on mobile 

![screen shot 2013-09-12 at 4 02 46 pm](https://f.cloud.github.com/assets/1681963/1133886/51be50f4-1be6-11e3-9d4e-ebf2a262b7bd.png)