Fix display of recurring events.

Fixes #56

src/components/Calendar.tsx

@@ -63,6 +63,7 @@ class Calendar extends React.PureComponent<PropsType> {
 
           const shift = next.subtractDateTz(event.startDate);
           const ev = event.clone();
+          (ev as any).journalUid = (event as any).journalUid;
           ev.startDate.addDuration(shift);
           ev.endDate.addDuration(shift);
           entries.push(ev);