report target
This target exists solely for convenience to translators, enabling them
to check which articles are not 100% translated and have to be updated.
The way to check this is by running make report TEAM=lang,
where lang is the language code, as usual. Thus, to check all
French translations, one would run
make report TEAM=fr
Caution: This target checks only the PO files; if there are translations that are maintained in the old-fashioned way, they are not reported since there is no reasonable way to check if they are up-to-date. In fact, this is one of the main reasons GNUN is being developed, if you recall.