Short overview:
1. The English texts are created by the developer of the online implementation (exception: the texts for the tutorial are provided by the creator of the tutorial).
2. The translation into other languages is done by volunteers from the community.
3. If a translation of a text is not changed by anyone for 30 days, it is automatically considered validated.
4. Validated translations can only be changed by experienced translators. To do so, you must have played the game at least 10 times, have at least 90 karma, and have been with BGA for at least 3 months.If you find errors in validated translations and are not authorized to edit them yourself, you can ask in the
language specific forums if someone would like to correct them.
5. Changes to English texts can be requested by by experienced users. Every change to English texts is reviewed by moderators. Alternatively, a bug report can be created for the game so that the developer can correct the text.
6. Games can be translated as soon as they are available as beta versions (or max. 24 hours later). As long as games are alpha, they can only be translated by the developer (but this rarely happens because the developer already has enough to do with developing the game).
7. Translations and changes to translations are usually visible within 24 hours (in the past, the automatic daily update of new and changed translations has not worked properly on occasion, but that was a bug and normally translations go live after 24 hours).
For more details, see the official translation FAQ and the forum post Fixing Validated Translations: new process!
If you still have any questions, please ask a more specific question.