Updated mediawiki/extensions
Project: mediawiki/extensions/CirrusSearch  a87c637a0fa4d0637611b42da1a3d6a16dc5d6bf

Move validateAnalyzers code into separate class

Meanwhile also duplicated checkConfig & related in Validator.php
Meanwhile also removed getSettings method, which is no longer used

Change-Id: I22e132d6698f53c47a243d05141384a675dac7ad