Removing left bar + refining user info on mobile

I'm not entirely sure why you can't automatically merge the branches... all you have to do it copy/paste Refreshed.skin.php, small.css, and main.css, and add in avatar-none.png to the images directory. Also, I'm requesting that this be pulled into master and not mobile-icons because master is changed so much mobile-icons will likely be out of date by the time it's ready to be merged....

Anyway, this removes the left sidebar on mobile and also changes the user info on mobile so it displays like this:
![mobile](https://f.cloud.github.com/assets/5515877/1952337/bc360d82-81a3-11e3-83a5-3c49f786f2cd.png)
(If SocialProfile is enabled, the default avatar defined there is displayed; otherwise the avatar above is displayed.)