Updated mediawiki/extensions
Project: mediawiki/extensions/ApprovedRevs  51500129cb1f03d01f3906f0b8d7d67ba19121e5
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Removed getSQL() call - no longer necessary, since MW < 1.17 is not supported

Change-Id: I7d312203393cf2b62e2dc79e1a035b5147e13443