Updated mediawiki/extensions
Project: mediawiki/extensions/EventLogging  bd6d21b74d8e05e6d2033250c891c7006f5a48dc

Quieter installation of dependencies; defaultrebase=0

* In .gitreview, specify defaultrebase=0 (was: 1)
* In .travis.yml, run pip in quiet mode, and tell pyzmq's setup.py to use
  bundled zmq lib.

Change-Id: I3ab55b0088eb385b59d57a7e8233ed4702276556