Added module language files to German language folder -- still need to be translated;

Fixed undefined error in acp_portal.php caused by old code; 
Fixed undefined error in portal.php if Portal is accessed after it has been uninstalled -- now it redirects to Index;

root/language/en/mods/portal.php

@@ -37,6 +37,5 @@ if (empty($lang) || !is_array($lang))
 // Common
 $lang = array_merge($lang, array(
 	'PORTAL'		=> 'Portal',
-	'NO_MODULES'	=> 'No modules have been detected.',
 ));
 ?>