Do not flip margin of magnify icon on user interface language

Compare [[File:example.jpg|thumb|caption]] on
https://www.mediawiki.org/wiki/Help:Images?uselang=en and
https://www.mediawiki.org/wiki/Help:Images?uselang=ar

Change-Id: If48f515d081611c3f5521729719fc44fa2eaeda5
Merge "Do not flip margin of magnify icon on user interface language"