Updated mediawiki/extensions
Project: mediawiki/extensions/ZeroRatedMobileAccess  6b69ad1334598df1f35d31c2ab6e5846eb5d5bd6

Added "admins" parameter to the zero config

* A user account can now be added to the json zero config,
  validated and shown properly as a link to the User:xxx page.
* Changed security model - now in addition to 'zero-edit' right which
  gives admin access to zero namespace, any user who has been listed
  in the 'admins' section of the configuration page will have 'edit'
  rights to that page (This affects only that specific config page).
  In order to prevent accidental lockout, when a partner edits config,
  they cannot remove themselves from the 'admins' section.
* Minor cleanup - old sample json file is deleted, comments

Change-Id: I698c85d548c383b044374cd2c44b8baa61b1379f