Language updates for Norwegian (no and nb)

[Mathias-S]

Updated language files for Norwegian (no) and Norwegian Bokmål (nb). It includes missing translations and corrected incorrect translations.

"Nummerert" (numbered) was misspelled (as 'numrert'), and has been fixed.

Some of the terms for form elements are incorrect, and I've replaced them with the established Norwegian terms for form elements.

All properties (line 134-148) have been changed as they are more correct in Norwegian. The word "Finn" (Find) has been replaced with "Søk" ('search'), as this is what is currently used in nearly all programs with Norwegian interface.

Some longer sentences have been rewritten as they were poorly written and I've also made some minor changes in other places.

[Mathias-S]

Norwegian (no) language file for 2.6.3b

[Mathias-S]

Norwegian bokmål (nb) language file for 2.6.3b

[w.olchawa]

Fixed with [2312]