Small thread code refactoring

boards/models/thread.py

@@ -88,7 +88,7 b' class Thread(models.Model):'
         Checks if the thread can be bumped by replying to it.
         """
 
-        return self.bumpable
+        return self.bumpable and not self.archived
 
     def get_last_replies(self):
         """
@@ -161,9 +161,6 b' class Thread(models.Model):'
 
         return self.get_opening_post(only_id=True).id
 
-    def __unicode__(self):
-        return str(self.id)
-
     def get_pub_time(self):
         """
         Gets opening post's pub time because thread does not have its own one.