First pass at a basic design

This copies a bunch of design elements from some of the other components
in the exhibit. It's just a starting point to get everything in a basic
layout for content customization.
Enabling glyphicons for the home icon
Cleaning up styling for the inner bar pages

This add linking functionality and the basic structure of the design for
the inner bat pages.
Cropped bat images
Make the bat page the homepage
Improved layout with bat audio and image merged
Ignore the audio video files

We'll pull these down individually.