Last modified: 2014-10-19 17:52:28 UTC
Annotator should only show for the 'view' action. Currently, it also does for the others (edit, history, etc.).
It should also ensure the page exists. This can use Title::exists (https://doc.wikimedia.org/mediawiki-core/master/php/html/classTitle.html#aaee062cc380f4a23526db0696b9143b4).