GtkFontButton: Use the same font name as the font chooser
GtkFontButton: Use the same font name as the font chooser

The font chooser constructs the display name for the font from
the family and face names. Do the same in the font button, so
we don't end up calling the same font by different names, which
would be confusing.

grubersjoe/adwaita,jadahl/gtk,Lyude/gtk-,jigpu/gtk,ahodesuka/gtk,Adamovskiy/gtk,jigpu/gtk,Adamovskiy/gtk,grubersjoe/adwaita,grubersjoe/adwaita,chergert/gtk,davidgumberg/gtk,Adamovskiy/gtk,alexlarsson/gtk,chergert/gtk,Lyude/gtk-,grubersjoe/adwaita,ahodesuka/gtk,jigpu/gtk,davidgumberg/gtk,ahodesuka/gtk,Lyude/gtk-,alexlarsson/gtk,Adamovskiy/gtk,alexlarsson/gtk,jessevdk/gtk,jessevdk/gtk,jigpu/gtk,jigpu/gtk,jessevdk/gtk,davidgumberg/gtk,grubersjoe/adwaita,Adamovskiy/gtk,davidgumberg/gtk,davidgumberg/gtk,grubersjoe/adwaita,davidgumberg/gtk,jessevdk/gtk,jessevdk/gtk,alexlarsson/gtk,jadahl/gtk,chergert/gtk,Lyude/gtk-,chergert/gtk,ahodesuka/gtk,Adamovskiy/gtk,jigpu/gtk,alexlarsson/gtk,alexlarsson/gtk,jadahl/gtk,chergert/gtk,grubersjoe/adwaita,Lyude/gtk-,alexlarsson/gtk,ahodesuka/gtk,jadahl/gtk,jadahl/gtk,grubersjoe/adwaita,jessevdk/gtk,jadahl/gtk,davidgumberg/gtk,jadahl/gtk,Adamovskiy/gtk,jigpu/gtk,Lyude/gtk-,Lyude/gtk-,ahodesuka/gtk,jigpu/gtk,chergert/gtk,alexlarsson/gtk,davidgumberg/gtk,chergert/gtk,ahodesuka/gtk,ahodesuka/gtk,jadahl/gtk,Adamovskiy/gtk,jessevdk/gtk,chergert/gtk,Lyude/gtk-