LPS-43443 - Make carousel responsive and update layout

https://issues.liferay.com/browse/LPS-43443

Hey Nate,

The images for the carousel are from http://unsplash.com (Free to do whatever you want hi res photos). You can read up on [license](http://creativecommons.org/choose/zero/). Let me know if these are ok to include in the theme.

Patrick