Slim undervolt code

Here is the undervolt algorithm slimmed down a bit.
You know I'm not an expert on Java, so probably there's some mistake. But take a look, I think the idea is fine.
Delete unnecessary string conversion
Update licences and copyright
Rebranding - NovaThor Settings
Fix codina/janice distinguishing
Remove translations

Whole NovaThor Settings app have to be re-translated.
Please for now dont send any translations until we finish adding all
features.
Add more undervolt steps

Now that undervolt algorithm was slimmed, there's no cons of adding some more voltages steps.
I tested -100uV, not a single reboot (if the additional steps options isn't enabled).