Create a place to gather information about the different mailing lists, and their scope and policy
lists: -project, -news, -ux, -dev, -testers, -l10n, -press, -fundraising, -sysadmins, -security.
If I forgot any, add it to the list :)
When this ticket is closed, #7937 (closed) can be closed too, as it’s done here.
Feature Branch: web/7698-contacts