Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  a6e3a9138c0f5b4e9cd1e98765220bb86d07108e

QA Duplicate images have empty href tag, check alt instead

Also run for both Chrome and Firefox
Rename page support test for consistency
Fix whitespace in uploads step

Change-Id: I1833e751431e631a7babc1e0e8ee4d425d261dea