Hides the offline presence dot from old reddit. Only hides offline presence, so you notice if you're displayed as online. https://old.reddit.com/r/changelog/comments/lx08r2/announcing_online_presence_indicators/
這裡顯示腳本的所有版本。 只顯示彼此間有代碼差異的版本。
Make script run on document start to help on dot flashes, Handle document.head not being ready yet.
