Previously, oversized images in the image review UI would cause them to

overflow outside of the review box and increase the width of the page.

Now, these images are confined to the width of the review box and will

scroll horizontally when they are too large.

Created a review comment on an oversized image; it scrolled with the

  page.
Scrolled an oversized image and created a commment; it worked

  correctly and scrolled with the page.
Ensured the scroll bar only showed when images were oversized for the

  currently selected scale.