/usr/share/fusionforge/ is in fusionforge-plugin-mediawiki 6.0.5-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/fusionforge/cronjobs/
/usr/share/fusionforge/plugins/
/usr/share/fusionforge/plugins/mediawiki/
/usr/share/fusionforge/plugins/mediawiki/GNUmakefile
/usr/share/fusionforge/plugins/mediawiki/README
/usr/share/fusionforge/plugins/mediawiki/README.codendi
/usr/share/fusionforge/plugins/mediawiki/bin/
/usr/share/fusionforge/plugins/mediawiki/bin/create_links.sh
/usr/share/fusionforge/plugins/mediawiki/bin/install.sh
/usr/share/fusionforge/plugins/mediawiki/bin/mw-drop-wikis.php
/usr/share/fusionforge/plugins/mediawiki/bin/mw-fulldump
/usr/share/fusionforge/plugins/mediawiki/bin/mw-fullrestore
/usr/share/fusionforge/plugins/mediawiki/bin/mw-plugin-init.php
/usr/share/fusionforge/plugins/mediawiki/bin/mw-wrapper.php
/usr/share/fusionforge/plugins/mediawiki/common/
/usr/share/fusionforge/plugins/mediawiki/common/mediawikiPlugin.class.php
/usr/share/fusionforge/plugins/mediawiki/cronjobs/
/usr/share/fusionforge/plugins/mediawiki/cronjobs/create-imagedirs.php
/usr/share/fusionforge/plugins/mediawiki/cronjobs/create-wikis-mysql.php
/usr/share/fusionforge/plugins/mediawiki/cronjobs/create-wikis.php
/usr/share/fusionforge/plugins/mediawiki/cronjobs/dump-wikis.php
/usr/share/fusionforge/plugins/mediawiki/db/
/usr/share/fusionforge/plugins/mediawiki/db/mediawiki-init.sql
/usr/share/fusionforge/plugins/mediawiki/etc/
/usr/share/fusionforge/plugins/mediawiki/etc/cron.d/
/usr/share/fusionforge/plugins/mediawiki/etc/cron.d/fusionforge-plugin-mediawiki
/usr/share/fusionforge/plugins/mediawiki/etc/httpd.conf.d/
/usr/share/fusionforge/plugins/mediawiki/etc/httpd.conf.d/plugin-mediawiki.inc
/usr/share/fusionforge/plugins/mediawiki/etc/mediawiki.ini
/usr/share/fusionforge/plugins/mediawiki/etc/plugins/
/usr/share/fusionforge/plugins/mediawiki/etc/plugins/mediawiki/
/usr/share/fusionforge/plugins/mediawiki/etc/plugins/mediawiki/LocalSettings.php
/usr/share/fusionforge/plugins/mediawiki/include/
/usr/share/fusionforge/plugins/mediawiki/include/MediaWikiPluginDescriptor.class.php
/usr/share/fusionforge/plugins/mediawiki/include/MediaWikiPluginInfo.class.php
/usr/share/fusionforge/plugins/mediawiki/include/mediawiki-init.php
/usr/share/fusionforge/plugins/mediawiki/mediawiki-skin/
/usr/share/fusionforge/plugins/mediawiki/mediawiki-skin/FusionForge.php
/usr/share/fusionforge/plugins/mediawiki/mediawiki-skin/FusionForge.php.patch
/usr/share/fusionforge/plugins/mediawiki/mediawiki-skin/FusionForge.php.renamed
/usr/share/fusionforge/plugins/mediawiki/mediawiki-skin/Makefile
/usr/share/fusionforge/plugins/mediawiki/mediawiki-skin/README.beforemodifying
/usr/share/fusionforge/plugins/mediawiki/www/
/usr/share/fusionforge/plugins/mediawiki/www/DatabaseForgeMysql.php
/usr/share/fusionforge/plugins/mediawiki/www/DatabaseForgePgsql.php
/usr/share/fusionforge/plugins/mediawiki/www/LocalSettings.php
/usr/share/fusionforge/plugins/mediawiki/www/frame.php
/usr/share/fusionforge/plugins/mediawiki/www/plugin_admin.php
/usr/share/fusionforge/post-install.d/