policies.json documentation:
https://support.mozilla.org/en-US/products/firefox-enterprise/policies-customization-enterprise/policies-overview-enterprise
https://github.com/mozilla/policy-templates

distribution.ini documentation:
https://wiki.mozilla.org/Distribution_INI_File

Cool settings
https://github.com/pyllyukko/user.js/blob/master/user.js
License: MIT