Updates to the home page!

@gholtslander 

Here's what it looks like now:

![image](https://cloud.githubusercontent.com/assets/463132/2623361/29c7dabc-bce9-11e3-83ce-6a5b5d1bbaed.png)

It certainly is not pretty, but the basics are there now. The carousel is in place and one can add items that link elsewhere. The total donations area is there, but it's static for now. I figured it made more sense to work on that in a separate branch.