These plural forms were re-added in #557.
The following make -C src translate also caught a new last-minute added string.
The diff is produced by running `make -C src translate`.
<!--e57a25ab6845829454e8d69fc972939a-->
The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.
<!--021abf342d371248e50ceaed478a90ca-->
See the guideline for information on the review process. A summary of reviews will appear here.
<!--174a7506f384e20aa4161008e828411d-->
Reviewers, this pull request conflicts with the following ones:
If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.
concept ack