Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  12b3c55dffe6a9f7cf943c704e8ea44aa8cbf139

Add code to prevent exception for new db columns

When we add new columns and the code is not deployed, moderation
would throw exception on unrecognized columns

Change-Id: Ibe13492ec1845d5861e41488ddd2b56559bf9587