Updated the Norwegian Bokmål translation
I noticed that it had apparently been some time since the NB translation had got new translations of strings, so I gave it a try, with me having extensive experience with Poedit and all.
- Translated all strings that I could see in the core interface bars and some of the menus.
- Translated many smaller stings. The knock-on effect of translating those strings will very likely cover the welcome-dialog too.
- Removed the fuzzy-marked strings, as essentially 0 of the 3,000 of them were correct translations either way.