Merge Responsive branch into parallax background

In order to get the responsive changes through, I'm going to add them to this pull request.  The responsive changes included the parallax backgrounds, so this seems to make the most sense.  To make the site more responsive, I added a mobile menu and adjusted the picture backgrounds so that the sites looks nice on phones, and also added a normalize.css so that it looks the same on the major browsers (firefox, chrome, opera, and ie). I've also integrated the changes to the content into this PR, in the hopes of avoiding merge conflicts and allowing this branch to become the new master when we are ready to make it so.