Make timezone test expect Z suffix for UTC times
Make timezone test expect Z suffix for UTC times

Moment 2.13.0 now formats moments in UTC mode with a "Z" suffix instead
of +00:00.

This commit changes the FullCalendar automated test for timezones to
expect that new formatting.

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