Show post images in lightbox

Squashed commit of the following:

commit 775563ab0f5922412280dcde79594f30bef17220
Author: Mark Schabacker <mark.schabacker@gmail.com>
Date:   Sat May 11 13:33:02 2013 -0400

    Show lightbox for actual images

commit aa79dad7ffb744f485b9264e6b529db10eec6bdd
Author: Mark Schabacker <mark.schabacker@gmail.com>
Date:   Sat May 11 13:14:02 2013 -0400

    showing hard coded image in lightbox