GMO skin for MediaWiki
This is meant to be a checked out using git submodules, so:
$ git clone https://gerrit.wikimedia.org/r/p/mediawiki/core wiki
$ cd wiki
$ git checkout REL1_19
$ cp ~/LocalSettingsSTORAGE/LocalSettings.php .
$ git submodule add https://github.com/mozilla/mediawiki-skins-gmo.git extensions/gmo
$ for i in extensions/gmo/skins/*; do ln -s ../$i skins ; done
$ awk '/(path|url) =/ {print $3}' extensions/gmo/gitmodules | xargs -n 2 git submodule add -f