Updated mediawiki/extensions
Project: mediawiki/extensions/WebChat  2d0ca9b2f3deadc7ad0c5ef4569c5290eccab01f

Use protocol relative URL

This makes the Freenode chat also work on a wiki that is using HTTPS.

Change-Id: I8265498b0b3baa902f4da4bad25e5385d4811ecb