Update locale keys and contents
Update locale keys and contents

Refs flarum/core#428.

pladask/flarum-ext-norwegian-nynorsk,pladask/flarum-ext-norwegian-bokmal,flarum/english,gtugablue/flarum-ext-portuguese,raweba/flarum-ext-danish,FlarumChina/flarum-ext-simplified-chinese-pro,ogioncz/flarum-ext-czech,pladask/flarum-ext-norwegian-nynorsk,pladask/flarum-ext-norwegian-bokmal,ogioncz/flarum-ext-czech,balkanje/flarum-ext-bosnian1,flarum/flarum-ext-english,FlarumChina/flarum-ext-simplified-chinese-pro