Updated mediawiki/extensions
Project: mediawiki/extensions/CentralNotice  4422e41499395fa4e1edb2f86743b299b55588f1

Set LandingPages value on page load

Otherwise the default isn't set and it looks like the field is
empty (and it will be on next page save)

Change-Id: I1f143b56a10958e7e45d5bb7a32ab93ee49db315