'CategoryPageView': before viewing a categorypage in CategoryPage::view
$catpage: CategoryPage instance
+'ChangeAccountCreationThrottle': Called to change $wgAccountCreationThrottle
+$ip: The ip address of the user
+&$wgAccountCreationThrottle: The global variable $wgAccountCreationThrottle to be changed
+
'ChangesListInsertArticleLink': Override or augment link to article in RC list.
&$changesList: ChangesList instance.
&$articlelink: HTML of link to article (already filled-in).