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/
这些是代码更新过的版本。 显示所有版本
Make script run on document start to help on dot flashes, Handle document.head not being ready yet.
