Updated mediawiki/extensions
Project: mediawiki/extensions/Echo  75fb6a79aacb1a5b85bf7bf1e95ed351c9e9533d
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Abstracting MySQL in Echo so storage type can be swapped easily

Patch Set 6:
	* remove redundant JobQueueDB because it's the default
	* remove extra ;

Change-Id: I25dc0203ed5be1e4989242a87f4fde9c8799de28