This system add-on replaces the new tab page in Firefox with a new design and functionality as part of the Activity Stream project.
The files in this directory, including vendor dependencies, are imported from the system-addon directory in https://github.com/mozilla/activity-stream.
Read docs/v2-system-addon for more detail.
Where should I file bugs?
We regularly check the ActivityStream:NewTab component on Bugzilla.
Activity Stream localization is managed via Pontoon, not direct pull requests to the repository. If you want to fix a typo, add a new language, or simply know more about localization, please get in touch with the existing localization team for your language, or Mozilla’s l10n-drivers for guidance.