Updated mediawiki/extensions
Project: mediawiki/extensions/VisualEditor  46f5f2983920bf71c48ca29fd69d849fd6f1f4ac

Move index label generation to the model

Also make available as a static method so it can be used by the
converter. We will need this for generated HTML for the external
clipboard.

Change-Id: Ief843ac10cd6c6e4b25e09a007625d363792adff