Updated mediawiki/extensions
Project: mediawiki/extensions/GuidedTour  6445981c5eea7a9e5613295f6d31c8a71ad804de

The amazing button class override patch, with tests.

Setup default mappings to mw styles for various button types.
New tour button spec flagType.  Default behavior is to mark
everything as progressive aside from back and link buttons.
All button types including custom buttons can be flagged by explictly
defining the button and setting flagType property. Currently supports:
primary, progressive, constructive, and destructive types.
Additionally, custom buttons now have base mw-ui-button styles.

Change-Id: I32d7f8c8fa38c9f334c3ea28e96d4d83a9f5fe6e