Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  cddc3143f55125e0dcda18a40181788904a3013a
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(bug 44538) using wb.utilities.buildPendingCounter() for references counter now

IMPORTANT: this change-set also depends on change-set Ibf5ebbd1 which has to be merged first!

Change-Id: Ie3a92eda14a57ad7f3a5d436aab3b9e33ac68c31