Updated mediawiki/extensions
Project: mediawiki/extensions/UserMerge  2df1dd70a80a2e2cf7f5daa86dd51b073d647d98

Replace usage of SpecialPage::getTitle with getPageTitle

Was deprecated in 1.23, see Icdcf5d5295ef5e7f08b1d403e0c123f78738fd40

Change-Id: Ic6e5216eee5240a30c17694e7cb71d923db2defb