Wikia/mercury — pull request #415 by bkoval (2014-12-01 11:31:35+00:00)
Title: Little bit of z-index cleanups for lightbox

@hakubo @rogatty @nandy-andy We had a problem with site-head overlaying lightbox when the user scrolls up with the lightbox open, so i did a bit of cleaning up with our z-indexes.

I verified that the lightbox behaves properly for:
- images
- videos
- maps