Redirects from www.reddit.com to corresponding old.reddit.com page
Simple script to redirect from www. subdomain to old. subdomain of reddit.com, to not use the modern/redesigned view.
For example, going to https://www.reddit.com/r/cpp/ will end up in redirect to https://old.reddit.com/r/cpp/
When redirecting it will also cover the original site with a grey screen with text 'Redirecting to old.reddit.com' (see screenshot). In case you have a slow connection this will prevent you from interacting with the old page by mistake and wasting progress once the redirect comes though.
NOTE 1: it will still leave the original www. containing entry in your history. Comment if this is a problem.
NOTE 2: it will also work in case of entering URL without www in front of reddit.com, since Reddit itself redirects to www.reddit.com in that case.
NOTE 3: in case of galleries and polls it won't do anything, since on old Reddit they result in "page does not exist" erorr.
