ICU message format editor

[rob006]

If you struggle with new ICU format for plurals, you can use https://format-message.github.io/icu-message-format-for-translators/editor.html to edit message and then copy result to input in Weblate. This editor provides syntax check and allows you to test translation (you can use "count" field to check how result will look for different numbers), so it should help you avoid basic mistakes.