Hi Goran,
Thanks for getting in touch. The problem is that the Norwegian translations are broken and incomplete, and need to be redone. Is that something you’d be willing to help us with? We have both a Norwegian Bokmål and Norwegian Nynorsk translation, and they both need work. Updating the translations will fix the Previous/Next Events links, as well as other bits of English.
If you’re interested, check out the Getting Started post where you’ll find the instructions and files you need. Let me know if you have any questions!
Best,
Leah