Restore some vertical space on top of footer

After removing the bottom ad space, the bottom of the page got very busy. This PR adds some space between the content and the footer. 

![space-footer](https://f.cloud.github.com/assets/85783/2078185/bed6f0f6-8dba-11e3-9a13-1749c47972ee.gif)

![ ](http://s1.developerslife.ru/public/images/gifs/499790db-6663-46e7-be2c-dc0a28be3677.gif)