Improved translation for NB - Norsk Bokmål

[magnulu]

Cleaned up the translation, IMO making it better. Also added translations for one_liner's and FreeCBT-specific stuff.

[magnulu]

(How) can I build an android apk to test that everything is right?. First time contributor here, and can't find the answer from searching :)

[erosson]

Awesome, thank you so much! Merging now, and it should appear in the app in the next day or two, without an appstore update. Make sure you kill and restart your app to see it.

(How) can I build an android apk to test that everything is right?.

I don't expect translators to do this! Appreciate your thoroughness all the same, though.

The automated tests attached to this pull request are the main check for correctness. I also run things on my machine before merging, mostly just seeing if translations appear at all.

https://github.com/erosson/freecbt/blob/master/CONTRIBUTING.md should have docs for building/running the project - but it uses expo's dev kit, not a local apk, and it's a little out of date. Short version of how I develop things:

# Run the project's devcontainer in vscode. it's a docker container with pre-installed dependencies like node/yarn/expo/android tools

yarn
yarn start

# After `yarn start`, an Expo server is running. 
# Run the Expo client on your phone, connect to the server, and see the app.