Short URL links are not being embedded due to an HTTPs insecure content error

Run OAE behind https and add a short url (ex: http://youtu.be/JrtWhFtjXTA). You'll get the following warning:
> [blocked] The page at 'https://oae.gatech.edu/content/gatech/WylLgWJ8l' was loaded over HTTPS, but ran insecure content from 'http://api.longurl.org/v2/expand?callback=jQuery20005210501232650131_1405678391547&url=http%3A%2F%2Fyoutu.be%2FJrtWhFtjXTA&format=json': this content should also be loaded over HTTPS.

This probably has something to do with the oembed plugin