move language detection to a plugin, remove config.php constant

config.php-dist

@@ -180,12 +180,6 @@
 	define('CHECK_FOR_UPDATES', true);
 	// Check for updates automatically if running Git version
  
-	define('DETECT_ARTICLE_LANGUAGE', false);
-	// Detect article language when updating feeds, presently this is only
-	// used for hyphenation. This may increase amount of CPU time used by 
-	// update processes, disable if necessary (i.e. you are being billed
-	// for CPU time).
-
 	define('ENABLE_GZIP_OUTPUT', false);
 	// Selectively gzip output to improve wire performance. This requires
 	// PHP Zlib extension on the server.