Judging by https://launchpad.net/~upstream-systemd-ci/+archive/ubuntu/systemd-ci/+packages,
it got updated about 15 hours ago and the "build check" action has been
failing with
```
The following packages have unmet dependencies:
kbd : Depends: console-setup but it is not going to be installed or
E: Unable to correct problems, you have held broken packages.
console-setup-mini but it is not going to be installed
```
since then
Apart from running CIFuzz for each relevant PR, let's run it
unconditionally for each push to master to detect possible issues
(caused by ignored PRs, etc.).
Followup to 94f660a8fe.
The GitHub guide on contributing file says: "Decide whether to store your
contributing guidelines in your repository's root, docs, or .github directory."
https://help.github.com/articles/setting-guidelines-for-repository-contributors/#adding-a-contributing-file
But there's really no advantage to keeping it in the hidden .github/, since
these are public and really belong together with the other documentation.
We can still keep the issue templates under .github/, since they are not really
documentation on their own.
Updated the links pointing to CONTRIBUTING.md to refer to the one in docs/.
The docs/ directory is special in GitHub, since it can be used to serve GitHub
Pages from, so there's a benefit to switching to it in order to expose it
directly as a website.
Updated references to it from the documentations themselves, from the
CONTRIBUTING.md file and from Meson build files.
Github now has issue templates in the web interface, and allows
more than one to be specified. Let's split our single template
in two: bug report and RFE.
