Hygiene: Replace usage of SpecialPage::getTitle with getPageTitle

Was deprecated in 1.23, see Icdcf5d5295ef5e7f08b1d403e0c123f78738fd40

Change-Id: I3f515dd82c6a73edc1425999625c22918db1ae5f
Merge "Hygiene: Replace usage of SpecialPage::getTitle with getPageTitle"