Is there a word for side-by-side translations?

I believe that the word you're looking for is parallel translation.

Another term, polyglot edition, refers to books published in a form where the original language is printed on left-hand pages, the translated text on right-hand facing pages. You can view a sample of such a text here.

A word-for-word translation under the original text is known as an interlinear translation.

A more general term: synoptic translation (example). But just as polyglot this doesn't specify the layout. The layout could be side-by-side (left/right page or parallel columns), interlinear, ruby etc. The layout for The Raven's example isn't side-by-side btw, it's interlinear.