add tests for refetchEventSources
add tests for refetchEventSources

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