Removed extra scroll bar.

See screenshot below. I get two scroll bars on the y-axis because overflow-y is being applied to both the html, and body tag.

![lmis-chrome-two-scrollbars](https://f.cloud.github.com/assets/126417/2345601/a6d7b23a-a537-11e3-8673-d25ff704b403.png)

If you look at the [Ebro theme](http://ebro-admin.tzdthemes.com/) it doesn't contain overflow-y on the html,body.