Updated mediawiki/extensions
Project: mediawiki/extensions/BlogPage  73e92637867569ce0ad475b28b776e11fe792362

Bumped version number (due to recent changes), added position => top for
stand-alone CSS modules and got rid of $dir.

Change-Id: I28c5c7c79bb8d36cba6b57f1aff42924266b5ff5