Fix the notifications polling when all the latest notifications are unread

Closes #896 (closed)

src/services/notifications_fetcher/notifications_fetcher.service.js

@@ -36,7 +36,10 @@ const fetchAndUpdate = ({ store, credentials, older = false }) => {
     const readNotifsIds = notifications.filter(n => n.seen).map(n => n.id)
     const numUnseenNotifs = notifications.length - readNotifsIds.length
     if (numUnseenNotifs > 0) {
-      args['since'] = Math.max(...readNotifsIds)
+      const latestNotifications = readNotifsIds.length === 0 ? notifications : readNotifsIds
+      if (latestNotifications.length > 0) {
+        args['since'] = Math.max(...latestNotifications)
+      }
       fetchNotifications({ store, args, older })
     }
     return result

[Shpuld Shpludson]

hmm, if I understand it correctly now, we can just skip this second fetch if there's no read notifications, it should be identical with the first fetch.