Include link and image URL in spam filter

스팸필터에 등록한 키워드가 <a href=""> 속성이나 <img src=""> 속성에
들어 있어도 제대로 필터링되도록 변경

modules/spamfilter/spamfilter.model.php

@@ -80,6 +80,7 @@ class spamfilterModel extends spamfilter
 		$word_list = $this->getDeniedWordList();
 		if(!count($word_list)) return new BaseObject();
 
+		$text = utf8_trim(utf8_normalize_spaces(htmlspecialchars_decode(strip_tags($text, '<a><img>'))));
 		foreach ($word_list as $word_item)
 		{
 			$word = $word_item->word;