Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  b2a423e0a6b26c3e5cb08937ab800c9c5c3c94dc

Add code to prevent exception for new db columns

When we add new columns and the code is not deployed, moderation
would probably throw exception on unrecognized columns, this is
to make sure that such exception would not happen

Change-Id: If3bfb4dc9e65152385d37aa9601190c093d840d3