Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  3ea1156699d1a27a6c275f8cdd7671afc93ca438

Hygiene: remove dead code in BaseUrlGenerator

With the conversion to the new url generation scheme complete the
only thing BaseUrlGenerator was doing anymore was holding the array
of loaded workflows.

This patch moves the BaseUrlGenerator::resolveTitle and
BaseUrlGenerator::withWorkflow to UrlGenerator and removes
BaseUrlGenerator.

Change-Id: I88b9ac49ab5fc2214592cc666370a32ad835d3b0