Translations:API:JSON version 2/8/en

Modules that were previously outputting raw booleans in JSON may now output those properties using the convention that has always been the standard (for version 1): empty-string for true and absent key for false. Client code that acts on these booleans will likely break or warn if it doesn't test for an absent key. Instances of this should be reported in Phabricator so the API module can be fixed, please tag with #MediaWiki-API and the tag for the relevant extension.