Updated mediawiki/extensions
Project: mediawiki/extensions/VisualEditor  d35cc1e57336da58bd234c34f919ec3d1e8a6855

[Browser test] Update to use new text styling menu

Also removed some duplicated code and
added test cases for bold and italic styling.

Change-Id: I181c208dd1165ea52bd4c49eb00c2eaae41ef05f