There are more, but these are most common ones.
There are also a number of urls that don't behave well when https, so those are skipped
At some point I have also started marking non-working URLs as [DEAD LINK], though
that's not a full coverage.
The logo is a blend of the gnucash tango icon with bugzilla's mascotte Buggie.
The favicon and assorted files has been generated from the logo via
https://realfavicongenerator.net
That site offers a more complete solution than just a simple favicon, when time
permits we may want to implement a more complete favicon handling on our websites
based on recommendations found there.
