message: Temporarily disable broken `mark-as-unread` feature
  Due to
diff: @@ -427,6 +427,7 @@ function deinitNotificationsPage(): void {
  }
  features.add({
  + disabled: '#2801',
  id: __filebasename,
  description: 'Adds button to mark issues and PRs as unread. They will reappear in Notifications.',
  screenshot: 'https://user-images.githubusercontent.com/1402241/27847663-963b7d7c-6171-11e7-9470-6e86d8463771.png'
  