The Marketplace packaged app supports locales. We should add them to the manifest, even if "Marketplace" isn't translated so our backend picks up the supported locales list.
https://github.com/mozilla/fireplace/commit/08b1dbb57458ee09e01ffb2997f658a0328e7e4d Is there anything else that needs to be done here? Zamboni might need to be updated, I think.
needsinfoing cvan. Close if we're good to go.
https://github.com/mozilla/fireplace/commit/bd712a7 Pushed a new packaged-app update: 20130613140040