Added Norwegian (nb-NO) localization and tests

[erlendr]

This adds Norwegian bokmål localization and tests (tests based on fi-FI)

[MehdiK]

Thanks for the contribution. Going through it now.

Just a quick question: does Norwegian have complex language rules around dealing with numbers, like Romanian, that could impact the localisation or it's straightforward one-to-one association with the English resources?

[MehdiK]

Looks good. Merged. Thanks.

[erlendr]

Thanks :) To answer your question about language rules: Norwegian is pretty straight forward when it comes to numbers, so the English resources match up well.

[MehdiK]

Cool. Thanks for the contribution :)