run a link checker over the old/new sites

[kohlhase]

I am sure many of the links are dangling.

[jwknopper]

some comments:

• a possible online link checker is https://validator.w3.org/checklink
• the software page seems to need the most work (on the other hand, other pages might be easier). A first look at the software page might become one or more new issues

[kohlhase]

Jan willem, could you just go ahead and fix links (redoing the software page if necessary) and at some time (soon) declare victory on this issue and close it.

[jwknopper]

plan was to do on openmath.github.io everything but the software page first, then make an inventarisation of the software page for a possibly new issue. I agree this can be done soon. For the software page we probably want to contact the partners for new addresses, so it might take a bit more work and time.

[kohlhase]

, then make an inventarisation of the software page for a possibly new issue.

this is #7

[jwknopper]

a lot of internal links are missing a trailing /, e.g. https://openmath.github.io/society
This should probably be fixed in Jekyll config
a good place to find broken links (other than software) is also the oldnews page.

[kohlhase]

the oldnews page is something we can only partially fix. I did some of that manually, and I am happy with the state it is in now. So I would accept all broken links there and concentrate on the other ones.

[tkw1536]

Not sure this is needed anymore, closing.