Archive current website at /2016/* URLs

[SimonSapin]

Since Rustfest EU 2017 has been announced, presumably http://www.rustfest.eu/ will at some point have info about it. Still, the info about the 2016 conference (the current website) shouldn’t disappear at that point.

To deal with this, the website should probably includes dates (years) in every URLs. Specifically:

• Move every page into a new 2016 subdirectory
• Set up redirects from each old URL, for example from http://www.rustfest.eu/schedule/ to http://www.rustfest.eu/2016/schedule/. Ideally these (except for the root http://www.rustfest.eu/, see below) should be 301 Moved Permanently HTTP redirects (so that search engines carry over existing index entries), but I don’t know if that’s possible with GitHub Pages.
• When the times comes to have a website for 2017, add it in a new 2017 subdirectory and change the http://www.rustfest.eu/ redirect so that it goes to http://www.rustfest.eu/2017/ instead. (This is why that one shouldn’t be "permanent".)
• In each year’s website, include at least one link to every previous edition.

If this sounds good and someone else doesn’t to it first, I’ll try and make a PR.

[badboy]

Thanks for bringing it up. I can take care of it after Rust Belt Rust. Help appreciated of course.