Hides posts on the RPS homepage when they're clicked & adds a "Mark all as read" button
Hides posts on the Rock, Paper, Shotgun homepage when you click them and adds a "Mark all as read" button to the header, so it's easier to see only what's new since your last visit.
Once a section has all of its posts hidden, the section itself will be hidden too.
To mark a post as read without visiting it, hold Ctrl+Shift while clicking it (or Ctrl while middle-clicking it).
