In Firefox, http shows the old site, https shows the new site

For some reason Firefox doesn't redirect the http website to https, even after disabling addons, emptying the browser's cache and hard reloading (Chrome is OK) so I get that:

http://rollupjs.org/repl shows the old REPL,
http://rollupjs.org/guide shows the old guide,
https://rollupjs.org/repl shows the new REPL,
https://rollupjs.org/guide shows the new guide.

Maybe, for those experiencing this, serving the new website on http too would avoid the confusion?

![screen shot 2018-04-22 at 19 08 12](https://user-images.githubusercontent.com/1309648/39097734-cd48d9c0-4660-11e8-9858-a0b7fbb017c7.png) ![screen shot 2018-04-22 at 19 08 40](https://user-images.githubusercontent.com/1309648/39097735-cd6f979a-4660-11e8-893c-dd4682a07583.png) ![screen shot 2018-04-22 at 19 09 15](https://user-images.githubusercontent.com/1309648/39097736-cd8ea248-4660-11e8-9ea7-b042e43bf09e.png) ![screen shot 2018-04-22 at 19 09 26](https://user-images.githubusercontent.com/1309648/39097737-cdb140dc-4660-11e8-9d66-756bc76d8864.png)

rollup / rollupjs.org

In Firefox, http shows the old site, https shows the new site #132