Disable automatic external link styling when link is an image #83
Description
NOTE: This issue should probably be worked on in conjunction with #120.
In AsciiDoc, you can add links to images. However, when the link is an external link, the automatic external link styling implemented in Automatic External Links applies a box arrow icon to the image. This is undesirable, and we should update the CSS to ignore external links when they're a part of an image.
