[MISC] Update all links to use HTTPS whenever possible.

[gllmflndn]

Checked all HTTP links and updated them if they can be served as HTTPS.

[effigies]

Looks good. Noticed a small thing that could be easily wrapped into this PR, but feel free to reject to keep this focused.

[gllmflndn]

The linkchecker failed because of https://talairach.org/ [SSL: CERTIFICATE_VERIFY_FAILED]. My browser is fine but wget/curl complains too: shall I revert to HTTP for that one link?

[effigies]

Looks like a badly configured server (doesn't bundle the intermediate cert; browsers will fetch it, CURL won't): https://www.ssllabs.com/ssltest/analyze.html?d=talairach.org&latest

It's the same cert for https://brainmap.org, so possibly @angielaird would know who to contact about fixing their config?

[effigies]

A couple changes. Also, to satisfy the linter, you're going to need to align the table fences (|) in tables where the number of characters in a row has changed.

[sappelhoff]

I pushed a commit fixing the table pipe errors.

I also started using a different link style in the "licenses" appendix. All text and links themselves stayed the same, but the link is now embedded in the name of the license.

Overhauling the licenses also made me aware of our definition of the "public domain" license, which is not congruent with the information wiki.creativecommons

We say:

No license required for any purpose; the work is not subject to copyright in any jurisdiction.

They say:

Works that are in the public domain in one legal jurisdiction are not necessarily in the public domain worldwide.

Somebody should take a look in a separate issue.

[sappelhoff]

LGTM generally if all links continue to work. Thanks Guillaume.

[sappelhoff]

mmh connection timeout on https://www.nitrc.org/projects/pediatricatlas ... remaining links seem okay. And the connection timeout happens for both https and http.

Maybe we can wait for a bit and it'll solve itself.

[sappelhoff]

Thanks @gllmflndn