font choices when creating new proof

provide users the ability to choose if font substitution is okay, or if proof pages should be created as images to retain look/layout of fonts not in the system.

Additionally, provide users the ability to add specific font families to their own accounts (to support proprietary fonts our clients might have, that we must work with quite often)

Both scenarios above pertain to uploading PowerPoint files specifically. When font substitution occurs, layout gets all out-of-whack, such as words overlapping, line breaks strangely, words over graphics on the slides, etc.