Updated mediawiki/extensions
Project: mediawiki/extensions/VisualEditor  721e69cd9ebb5db4bc77c78a1e283f4f1f487055
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Make defaultAttributes a static property as well

Change-Id: I8ee4796a93d55db9be6e43c78f3ac7bb29a65c6f

Replace nodeFactory invocations with direct static access

Change-Id: I2629c5fd659bca166237cef425f7cc3aff13ba0e