Updated mediawiki/extensions
Project: mediawiki/extensions/CentralNotice  f8419b153be549c3ac72b97e85623fb2af64e9c3

No longer prevent emergency banners from being hidden

Because we now have banner hide cookies based on banners, campaigns,
and custom shtuff we no longer care about emergency level.

Change-Id: I9c5736996aa61eb8a77578120e82a979833bd763