Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  0b63c1a9368240c46104b5e38098431648c5fe01

Only show file description page button for logged-in users

Change-Id: I206787ad2768f14d9705c29267dbee09b7b44705
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/226