Updated mediawiki/extensions
Project: mediawiki/extensions/Parsoid  2b9ee79790b4bb6e0fa882a807dfde6e336d9f63

(Bug 50055) Bug fix in escapeTplArgWT - wrong Comment constructor name

* Comment constructor in switch statement was called Comment
  instead of CommentTk which caused the bug.
* TODO: Add more parser tests.

Change-Id: I0af5889e7bccd0f659df9d4aa1feba9d977d1871