Updated mediawiki/extensions
Project: mediawiki/extensions/Mantle  ea0e40d293bb4adc195a848d5bb0cff8142a032c

Replace Mantle's EventEmitter with oojs's

Requires I89056c47fa14af3d7ba8cd326bcd84302353fe0c in oojs

Change-Id: I960592a3e8f3c853ee676fc6e983beda1b39563e