Port to i18next v4 format
Now that we have switched to i18next-parser we can also switch the json format to the newer version.
https://www.i18next.com/misc/json-format#i18next-json-v4
Todo:
- switch i18next-parser to v4
- switch the i18next init to v4
- port all apps, foreach:
- update toolkit
- switch i18next-parser to v4
v4 requires https://developer.mozilla.org/en-US/docs/web/javascript/reference/global_objects/intl/pluralrules
Which means we would drop support for Safari<13. If we do this then we need to add a check for (typeof Intl === 'undefined' || !Intl.PluralRules)
to the browser check script.
Edited by Reiter, Christoph