Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  28cbae3ce791d71eab36b27347c4d2e5e8d1c37e

Cleanup undefined method warnings

All remaining undefined method warnings come from the Flow\Formatter
namespace.  Those classes are being heavily reworked, not changing them
here as it would just cause a big merge conflict. 

Once the Flow\Formatter namespace is cleaned up the PhpUndefinedMethodinspection
can be re-enabled in scripts/analyze-phpstorm.xml

Change-Id: I1a305d54c672648ee08c696faf87635b8ce08859