Task for the sunsetting of Wikipedia Zero.
See also:
https://blog.wikimedia.org/2018/02/16/partnerships-new-approach/
https://medium.com/@refsrc/wikipedia-zero-which-provided-over-800-million-users-in-72-countries-with-access-to-wikipedia-at-ff3014a122e6
This includes:
[ ] Remove special Apache/appserver code for Zero
[x] Apache config ([[ https://gerrit.wikimedia.org/r/482492 | patch ]])
[x] `mobilelanding.php` ([[ https://gerrit.wikimedia.org/r/482493 | patch ]])
[ ] Disable ZeroBanner and ZeroPortal ([[ https://gerrit.wikimedia.org/r/482097 | patch ]])
[ ] Drop the Wikipedia Zero debug log channel ([[ https://gerrit.wikimedia.org/r/482099 | patch ]])
[ ] robots.php: Drop the special treatment for Wikipedia Zero ([[ https://gerrit.wikimedia.org/r/482100 | patch ]])
[ ] zerowiki: Stop whitelisting ZeroPortal to logged out users, no longer available ([[ https://gerrit.wikimedia.org/r/482101 | patch ]])
[ ] …
[ ] Un-deploy MediaWiki extensions:
[ ] Drop ZeroBanner and ZeroPortal from production ([[ https://gerrit.wikimedia.org/r/482102 | patch ]])
[ ] Stop configuring ZeroBanner and ZeroPortal, unused ([[ https://gerrit.wikimedia.org/r/482103 | patch ]])
[ ] Stop loading i18n for ZeroBanner and ZeroPortal, unused ([[ https://gerrit.wikimedia.org/r/482104 | patch ]])
[ ] …
[ ] Remove special Varnish VCL code for Zero support.
[ ] Phabricator hacks ([[ https://gerrit.wikimedia.org/r/479399 | patch ]])
[ ] Carrier tagging
[ ] …
[ ] Delete zerowiki
[ ] How-To: Delete a wiki (mw config, mw db, multiversion, apache, dns)
[ ] …
[ ] Hard-redirect `.zero.` domains to `.m.` and create a plan for their deprecation
[ ] {T197528}