Completion of translation support

[chezfo]

[Shirajuki]

Hmm... I have thought of adding translation support for all labels, but this might become quite big in scope as each label comes with a description taken from the source code of Anki. Translating everything will be quite difficult to scale in the future, it might be a hassle to do as of now as well since Anki is in the phase of adding lots of breaking changes too.

The themes is planned to be user added, and is in it's essence a name. Translating names can therefore be redundant. Same with the name of other anki addons.

The Extra label on the top can be translated tho 😊! I can try to translate that using some machine translation in the next update and hopefully you can help fix it if it comes out wrong in the future if that is possible! Thank you very much for the issue nonetheless!

[chezfo]

I'm always here!!