Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  df12a0d9c7dce2a012f85f4b5fed48680a0aae19

Added required Cucumber tags

Also:

- Refactored existing tags.
- Fixed whitespace.

Paired with: Chris McMahon
Bug: 64380

Change-Id: I5c65afb6046ef6cabb38225951ae6472bd5342cd