As stated by Jean-Yves, a timer should be set on the Firefox for developers pages, so they get automatically refreshed every release cycle. Sebastian  https://github.com/mozilla/kumascript/pull/101#issuecomment-275408148  https://developer.mozilla.org/en-US/Firefox/Releases
Jean-Yves, if I understood you correctly, you meant to set the "Rendering max age" for those pages to (at least) every 6 weeks, right? Sebastian
Yep, that's it. I think you have the rights to add it.
Ok, I'll do that then. I think every 3 weeks should be ok, so it doesn't take too long for the update in the worst case. Sebastian
Added a timeout of 21 days to all those pages. Sebastian