Martin's monster merge part 1/N: (hopefully) uncontroversial bits
This is basically
- dead code removal
- removal of obsolete documentation
- typo fixing
The old module-image for the shared runners will be discontinued on October 31. All users still referencing gitlab-registry.mpcdf.mpg.de/mpcdf/module-image in their CI pipelines need to switch to the new CI images now, see instructions here.
This is basically