Adds a slider to control CSS output size.

Squashed commit of the following:

commit 96ba5143bee6bec7da89cb2fed9f18877a1a07f4
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Jul 16 20:37:07 2013 -0700

    Builds v.0.1.4.

commit 59f837e96782f3d3af00d22c495572e70746c4bc
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Mon Jul 15 22:30:14 2013 -0700

    Fixes rounding issue.

commit ce8eab8d03070e496640bd1a39b5a79ec16c5275
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Mon Jul 15 22:22:18 2013 -0700

    Updates Rekapi Controls and Dragon.

commit ba1c92bf51b6b9bf81c2017dcca9e5a63e6a7157
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Jul 14 17:34:38 2013 -0700

    Implements GranularitySliderView.

commit 356bcd651208dd314108022bc90bf357f2d0728e
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sun Jul 14 16:45:11 2013 -0700

    Adds HTML and CSS for granularity control, as well as POC JavaScript.