Updated mediawiki/extensions
Project: mediawiki/extensions/Math  33ee76cdae01fa9e8f439a364d7e12cdf5169bea
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Rename Math.body to MathRenderer to be consistent with the class name.
Reson: Further classes will be added in the next step.

Change-Id: I9dba8c1fca11cbc51fa11edebabde4687d17e312