Integrates ElevateZoom Plus with Slick Carousel and lightboxes.

Requirements

1. Slick (Beta2+)
   • D7: Slick 3.x
   • D8: Slick 2.x
2. ElevateZoomPlus library:
   Extract it as is, rename it to elevatezoom-plus, so the assets are at:

   /sites/../libraries/elevatezoom-plus/src/jquery.ez-plus.js