Sorry, I honestly thought you were trolling.
The Transifex translation system was added so that it gets significantly easier for people to translate (which was proven by time, you are the first to complain, as far as I know)... there's no need to care about formatting, indentation, no need to upload/download anything anywhere, no need to update/rewrite/copy/backup anything anywhere.
The translation is as simple as:
1. click on string you want to translate
2. write your translation
3. click on save
No matter how hard I try, I cannot think of anything easier, honestly.
There is literally no overhead in the translation process anymore... with the exception of creating a user account (once, at the beginning).
But, if you prefer to translate using text files... you can still do that, Transifex offers a possibility to download a whole file for translation... the choice is yours.