Fix font registration for new version of PDFKit
Fix font registration for new version of PDFKit

FontKit, through PDFKit, takes the family name that we pass in
and uses it as a postscript name to try to find a font
variation, rather than registering our new font.  This check
throws an error since we do not have the necessary tables for
such a variation.  Not passing in the postscriptname allows the
font to be registered normally.

Nathanaela/fluentreports,beaudesigns/fluentreports,beaudesigns/fluentreports