I'll try to reorganize the files the way you suggested, I'll edit the post with the outcome when I'm done.
EDIT: Alright, I did that and while I did get my checkbox, it cannot be ticked and it has no text next to it. Copied the original 'info.json' and made a few changes regarding ID, Language Name and Author, checkbox is now working correctly. Will explore the game a little and come back with the final verdict.
EDIT 2: Cool, that seems to have fixed some of the issues with English text being displayed instead of the Portuguese text, especially during dates. That weird bug with the duplicated Policies options is gone too, as well as the policies' names and descriptions being displayed in English. The rest (tooltip menus, 'pushes' text, some isolated terms, etc.) is still the way it was before. Thank you for the help, sadambober!