Find dead implementations and replace them with archived/cached copies when available.

[caffeinewriter]

Find dead implementations and replace them with archived/cached copies when available.

[extremepayne]

List of all that don't work:
"Not secure":

• 149

Dead links:

• 287
• 426 second link
• 1286 third link
• 1335 second link
• 1425
• 1446

Appear to be broken:

• 320
• 426 first link

I'm not sure how to find archived copies, but if you could te me how, I'd be happy to find a few.

[caffeinewriter]

Thanks for checking those @extremepayne! That helps a lot. If you want to try and find archived versions, try checking the URL through https://web.archive.org or https://archive.today. Some sites might not have decent archives due to interactivity, or other things that don't translate well to static archives. If there's no archive, or if you just want to help contribute more, you can always take a look for alternate implementations!