- send status code 403 when attempt to enter a user comment, but comments are disabled

- don't increase hit count when a comment is posted
- remove the check of user ip agains spamhaus.org when a comment is entered (my conclusion is that is useless)

git-svn-id: http://piwigo.org/svn/trunk@2155 68402e56-0260-453c-a942-63ccdbb3a9ee

picture.php

@@ -244,7 +244,7 @@ DELETE FROM '.COMMENTS_TABLE.'
 }
 
 // incrementation of the number of hits, we do this only if no action
-if (trigger_event('allow_increment_element_hit_count', true) )
+if (trigger_event('allow_increment_element_hit_count', !isset($_POST['content']) ) )
 {
   $query = '
 UPDATE