Add location post type

Add a custom post type and, and a meta box for setting its fields,
for locations.

Update the front page template so it shows the location posts.

Add some simple jQuery to toggle the locations.
Restyle locations on home page

Adjust the HTML so it's a bit more semantic.

Clean up the ordering of locations.

Hide things with CSS classes and styles.

Style the locations navbar.

Show the featured image instead of the map (for now).
Add attribution for location images.