Google Code-in

Your task is to address two unrelated issues in MediaWiki core:

To add a "log extract" to Special:ChangeContentModel, similar to that which appears at the bottom of Special:MovePage, Special:PageLanguage, and other special pages.

To solve the issue in https://phabricator.wikimedia.org/T148006, where a different tooltip (link title= attribute) should be displayed for wikis where $wgGroupPermissions['*']['read'] = false. This part of MediaWiki's code is rather hard to navigate; the relevant function is OutputPage::buildPersonalUrls.