Updated Norwegian translation
Updated Norwegian translation

Updated the Norwegian version of welcomeText, hours format ,
externalfollowhelp and otherservers text.

netzkombinat/Qvitter,moshpirit/qvitter,moshpirit/qvitter,GreenLunar/qvitter,GreenLunar/qvitter,mitchellurgero/Qvitter,llebegue/qvitter,llebegue/qvitter,hannesmannerheim/qvitter,netzkombinat/Qvitter,hannesmannerheim/qvitter,mitchellurgero/Qvitter