Fix contact link rating

rating/contact_link.py

@@ -28,6 +28,8 @@ class Rater(AbstractRater):
             for link in self.check_results['hyperlinks'][url]['links']:
                 if link['text'].lower() == 'kontakt':
                     urls_with_contact_link += 1
+                    # make sure we only count 1 for this url
+                    break
 
         if urls_with_contact_link == urls:
             score = self.max_score

rating/social_media_links.py

@@ -37,6 +37,11 @@ class Rater(AbstractRater):
                     continue
                 
                 parsed = urlparse(link['href'])
+                if parsed is None:
+                    continue
+                if parsed.hostname is None:
+                    continue
+
                 if ("facebook.com" in parsed.hostname or
                     "twitter.com" in parsed.hostname or
                     "instagram.com" in parsed.hostname or