concrete5/concrete5-5.7.0 — pull request #1691 by EC-Chris (2014-12-21 00:06:43+00:00)
Title: Overlay class does not exist. Changed to lightbox.

Noticed this one through #1657. `\Concrete\Core\Html\Service\Overlay` does not exist. There's a Lightbox class in the package that's not used so I changed it to use that. I'm assuming this got renamed sometime and was never changed here.