Updated mediawiki/extensions
Project: mediawiki/extensions/Parsoid  e9f2d0136484d285d34e7525050c6b6a5d6a4d6b

Handle entities properly while escaping template args

* {{echo|&ndash;}} was serializing back to {{echo|–}} because
  the content in mw:Entity span is the decoded entity rather
  than original source.

* Added a parsoid-specific test to catch regressions.

Change-Id: I6063e93aebfe656641c714939a5962f2004cc346