* http://dxr.mozilla.org/mozilla-central/source/modules/libpref/src/init/all.js#4217
=== stable env: (CURRENTLY TESTING) ===
* web app: https://fmd.stage.mozaws.net
* b2g-FTU-fxa: must push gecko pref: user_pref("identity.fxaccounts.auth.uri", "https://api-accounts.stage.mozaws.net/v1");