Μετάφραση - Αγγλικά-Κροάτικα - View-messages-only

%l is a language, keep it untranslated

Croatian is a bit complicated here, I don't know if you want to deal with that. If %l is English, and Croatian for "English" is "engleski" our translation of this sentence would be - "vidi samo poruke na engleskom". And so on with all other languages. :) If however you decide you do want to deal with it, i can try to make translations for those languages in that form.