Hello!
I've just updated the spanish translation, and made some minor corrections:

https://steamcommunity.com/sharedfiles/filedetails/?id=2965601449

If you want to integrate it to the original mod, I can paste you the code here.

But if it's great to be an addon cause the updates gets crazy or just it's easier to have it this way, we can remain like this, although, I think it's great for the majority of players to have everything updated in a same place!

Thank you a lot, and sorry for the inconvenience