mark single notifs as seen properly on server

src/components/notification/notification.js

@@ -37,11 +37,11 @@ const Notification = {
     approveUser () {
       this.$store.state.api.backendInteractor.approveUser({ id: this.user.id })
       this.$store.dispatch('removeFollowRequest', this.user)
+      this.$store.dispatch('markSingleNotificationAsSeen', { id: this.notification.id })
       this.$store.dispatch('updateNotification', {
         id: this.notification.id,
         updater: notification => {
           notification.type = 'follow'
-          notification.seen = true
         }
       })
     },