Updated mediawiki/extensions
Project: mediawiki/extensions/Popups  541f2ca47057fb847a0d67e83d09e592303c0155

Flip the arrow position if the popup is flipped

- Only text popups
- Portrait popups
- Landscape popups

Had to convert the landscape popup's img into an svg:image
too. 2 new SVG masks were made to take care of the flipped
states.

Change-Id: Ib30bb7f5ff9857f6a470b07db05ab50fb0ca8a5d