Source changes for image #578793

Image		Source	Action	Timestamp	User
578793		http://25.media.tumblr.com/tumblr_ly8h4xvUFL1rnmwe4o3_1280.png	Removed	10 years ago	Background Pony #0B44
578793		http://derpy-jobs.tumblr.com/post/16334971938	Added	10 years ago	patec