Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  a30854d9bb491508c894c54cfe3f8d09febc03f5

QA: update thank test

* run in the builds
* simplify steps without changing function
* clarify object being used in FlowPage page object

Change-Id: Ia5ea726f8a9e8175d22b89c498f1a39903d0679a