Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  84457cf4dbae3d0a70353cab2b3064899502adce
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fix diff view js error (regression)

the diff page tries to load thumbnails and shouldn't
in process refactor watchlist.js to look like a module

Change-Id: Iad1fce511343c16c5017f8ea134efd50a64d7bba