Language translations for Avogadro will continue through Launchpad:
https://translations.launchpad.net/avogadro/
For example, for version 1.2:
https://translations.launchpad.net/avogadro/1.2/+translations
With Avogadro 2, the translation system will be set up to automate builds to a new GitHub repository:
The download system will allow users to grab updates to translations on a regular basis.