Updated mediawiki/extensions
Project: mediawiki/extensions/VisualEditor  abc5b9920d14ce062f7551a66be227b365283f6c

[browser test] Removed visual_editor from file names

No longer needed, since the files are now in VisualEditor repository.

Change-Id: Id677c2630ff5a1ae2d49f62058d0d4fdebeaf381