safeguard against gcal htmlLink not being given (#2844)
safeguard against gcal htmlLink not being given (#2844)

avanti-technologies/fullcalendar,deepskyr/fullcalendar,blubberly/fullcalendar,kleisauke/fullcalendar,oleg-babintsev/fullcalendar,rgnevashev/fullcalendar,kleisauke/fullcalendar,avanti-technologies/fullcalendar,avanti-technologies/fullcalendar,fullcalendar/fullcalendar,rgnevashev/fullcalendar,pietervisser/fullcalendar,kleisauke/fullcalendar,arshaw/fullcalendar,kleisauke/fullcalendar,laoneo/fullcalendar,laoneo/fullcalendar,avanti-technologies/fullcalendar,arshaw/fullcalendar,deepskyr/fullcalendar,rgnevashev/fullcalendar,deepskyr/fullcalendar,blubberly/fullcalendar,deepskyr/fullcalendar,arshaw/fullcalendar,pietervisser/fullcalendar,fullcalendar/fullcalendar,fullcalendar/fullcalendar,blubberly/fullcalendar,arshaw/fullcalendar,MeteorAdminz/fullcalendar,laoneo/fullcalendar,MeteorAdminz/fullcalendar,oleg-babintsev/fullcalendar,fullcalendar/fullcalendar,pietervisser/fullcalendar,oleg-babintsev/fullcalendar,MeteorAdminz/fullcalendar,blubberly/fullcalendar,rgnevashev/fullcalendar,MeteorAdminz/fullcalendar