Diverse Code Cleanups

*Code wurde PEP-8 gerecht formatiert
* Kleine Fehler die der PyCharm Inspector beanstandet wurden korrigiert

content/feeds.py

@@ -7,13 +7,14 @@ from django.utils.feedgenerator import Rss201rev2Feed
 from models import Article
 
 
+# noinspection PyMethodMayBeStatic
 class LatestNews(Feed):
     link = "http://www.kasu.at/"
     description = _("Current news from Kasu")
     title = "Kasu - traditonelle asiatische Spielkultur"
     feed_type = Rss201rev2Feed
 
-    def items(self, obj):
+    def items(self):
         return Article.objects.published()[:10]
 
     def item_title(self, item):
@@ -23,7 +24,7 @@ class LatestNews(Feed):
         return item.author.username
 
     def item_categories(self, item):
-        return (item.category.name,)
+        return item.category.name,
 
     def item_description(self, item):
         return item.content
@@ -32,6 +33,7 @@ class LatestNews(Feed):
         return datetime.combine(item.date_created, time())
 
 
+# noinspection PyMethodMayBeStatic
 class LatestComments(Feed):
     """Feed of latest comments on the current site."""
 
@@ -41,8 +43,10 @@ class LatestComments(Feed):
     feed_type = Rss201rev2Feed
 
     def items(self):
-        qs = comments.get_model().objects.filter(site__pk=settings.SITE_ID,
-            is_public=True, is_removed=False)
+        qs = comments.get_model().objects.filter(
+            site__pk=settings.SITE_ID,
+            is_public=True, is_removed=False
+        )
         return qs.order_by('-submit_date')[:40]
 
     def item_author_name(self, item):