These files are maintained by the QuickBox community. If you would like to become a translator (the best way to experience QuickBox in your native language), please signup for the Lab and submit your request to join the Translator Group. Once accepted you will have Developer access allowing you to commit, merge and request changes to the language templates.
All changes to these templates are first verified by QuickBox Moderators and Administrators to ensure a passing result to the official QuickBox repositories.
Creating a template for a new language is fairly straight-forward. Simply copy one of the already made language templates and begin translating.
The only files you need worry about are the ones marked lang_. These are the official template arrays that will then be ported over to official QuickBox Repositories.