Updated mediawiki/extensions
Project: mediawiki/extensions/CommonsMetadata  5c0e1a388b625794a99b6592c0416ce0c3553ebc

Make sure CMD doesn't overwrite itself

This fixes some issues when CMD is installed both on the repo and on
the local wiki, and repo data is overwritten with inferior local data.

Change-Id: I9d5ad481cc04c1d43d1b512586c0284094d00455