When you click on an image gallery, the image gallery should load the large image, not the original image

[ashleykolodziej]

Responsive Version:

2x and 3x

Expected behavior:

The gallery should load the large crop of the image in WordPress to improve load times.

Actual behavior:

The gallery loads the full size image when an image is clicked.

Link(s) where this can be reproduced:

https://id-responsi.cms-devl.bu.edu/dining/

Steps to reproduce:

1. Visit https://id-responsi.cms-devl.bu.edu/dining/
2. Click the first photo in the Photo Gallery section (make sure the page has completed loading)
3. A lightbox will show. The image will take a significant amount of time to load (several seconds at least)