py2 compatibility for fonts.py
py2 compatibility for fonts.py

mrpau/kolibri,mrpau/kolibri,learningequality/kolibri,indirectlylit/kolibri,indirectlylit/kolibri,learningequality/kolibri,mrpau/kolibri,learningequality/kolibri,indirectlylit/kolibri,mrpau/kolibri,learningequality/kolibri,indirectlylit/kolibri