private void loadSavedInfo() {
        // Load server update information
        loadLatestServerInfo();
        // Load available plugins information
        loadAvailablePluginsInfo();
        // Recreate list of plugins to update
        buildPluginsUpdateList();
    }
Loads list of available plugins and latest available server version from
conf/available-plugins.xml and conf/server-update.xml respectively.
xmppserver/src/main/java/org/jivesoftware/openfire/update/UpdateManager.java