Umbrella task to track the development of APIs required for this feature.
[x] API for tracking counts of qualifying edits (T212795)
 API for returning pages in need of descriptions or description translations (T206504)
 API for returning Commons files in need of captions or caption translations (T209997)
 Add a remote config flag to switch off the feature if needed, and ensure the apps check it
This is intended to support all Wikipedia languages.