@mocore:
might https://translate.google.com be of some use
If doing links manually, sure, google filters and un-encodes URLs nicely, but for automation if there's not an API to any of Google's web pages that you have an account for, they go to extremes to obfuscate their source code in their websites; run your translation page as you described - then view --> source of that page; I'd imagine it would be difficult to automate anything with that mess

If it's just a matter of making the link, such as your example, be "easier on the eyes", by all means, translate away!!! I love things that are easy on the eyes!
The goal for the link is merely a reference point; if someone wishes to point out differences between WIKI and WAYBACK but doesn't feel like doing the steps to create a replacement text page, I'm still happy for the link! As long as I can click on it, it'll take me there!

one potentaly more tricky step of automating some kind of diff
PHP's urldecode() function should do the same principle function as Google's Translate page does, IF PHP's in the mix of automating/diff
Thanks!