Updated mediawiki/extensions
Project: mediawiki/extensions/CentralNotice  3082dbde91958b7d0ad2c7b491d0c79e5a9f9939

Minor improvements in test fixtures

- Changed the structure of test fixtures data
- Changed some terms used
- Other minor changes

Change-Id: I803ff7868056ae286b4004ea95c13a0f786d462e