Updated mediawiki/extensions
Project: mediawiki/extensions/Popups  240e469d9ce0caf6c73f3a8871ef051cb5677526

Add Triangle/Pokey to the NavigationPopups

* Triangles using the border hack for the white part of the popups
* SVG clipPath on FF and Chrome, using SVG <image>
* Fallback to <img> on browsers with not SVG support

Change-Id: I3b1226051436652edbffe4642176c9a0e405243c