Refactors out src/app.js.

Squashed commit of the following:

commit 618015ee543320b561b35b3ae1ec05c9b16aa717
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Jul 13 21:29:37 2014 -0500

    Removes src/app.js and rebuilds bin/app.js.

commit 4e2abc5cfa24538e4e50324c7e488e1d62455dc9
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Jul 13 15:24:16 2014 -0500

    Refactors out all references to app module.