Updated mediawiki/extensions
Project: mediawiki/extensions/UploadWizard  9d76c306a4bf9a2a68ae3db3582bb4f30e64c7c1
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Cleanup Firefogg integration

 - Switch to 1080p WebM settings for transcoding
 - Enable Firefogg support by default (Bug 42733)
 - Stop encoding on remove

Change-Id: I3636173712b59e0183f11bf44cb0ca94ea104db0