Updated mediawiki/extensions
Project: mediawiki/extensions/TwnMainPage  12f42276deea115163f42d26796acb30898fd5e3

Make test more robust

The same element is used for percentages. If those get loaded
before this check, the test fails.

Change-Id: I2530b9aac2a21d020e337a0132e510a6c0c79ea9