Handle link rot by keeping snapshots

[rien]

By using robust links to ensure links used in our blog remain correct and alive, we can provide a better user experience.

There are a few ways we could handle this:

• Links to the 'outside world' are translated to a snapshot on the web archive. And the original link and date are embedded in data-originalurl and data-timestamp html attributes.
• Links are not translated, but there is a snapshot taken and embedded in attributes. With some javascript we could then create a dropdown for each link to choose to go to the snapshot.

The idea is based on a guest lecture from the course web development.

[rien]

Tagging @wschella

[wschella]

I propose we keep local snapshots instead of of a Web Archive snapshot.