A little bit of clean up

Fixed a few small XHTML validation errors
Fixed incorrect language string
Fixed empty latest bots block if no bot has visited the site

root/language/de/mods/portal/portal_announcements_module.php

@@ -42,7 +42,7 @@ $lang = array_merge($lang, array(
 	'POSTED_BY'						=> 'Autor',
 	'COMMENTS'						=> 'Kommentare',
 	'VIEW_COMMENTS'					=> 'Kommentare anzeigen',
-	'POST_REPLY'					=> 'Kommentar schreiben',
+	'PORTAL_POST_REPLY'				=> 'Kommentar schreiben',
 	'TOPIC_VIEWS'					=> 'Zugriffe',
 	'JUMP_NEWEST'					=> 'Zum letzten Beitrag springen',
 	'JUMP_FIRST'					=> 'Zum ersten Beitrag springen',