Bug 1038390 - Make Your Own Make-Masonry

<https://bugzilla.mozilla.org/show_bug.cgi?id=1038390>
<https://bugzilla.mozilla.org/show_bug.cgi?id=1059425>
The way I usually deal with the images loaded thing is to forced images to be square, i.e. knowing how high they will be before they even load. Would that work here?