Don't include archived posts in the tag images

boards/models/tag.py

@@ -91,8 +91,10 b' class Tag(models.Model, Viewable):'
     def get_description(self):
         return self.description
 
-    def get_random_image_post(self):
-        return boards.models.Post.objects.annotate(images_count=Count(
-            'images')).filter(images_count__gt=0, threads__tags__in=[self])\
-                    .order_by('?').first()
+    def get_random_image_post(self, archived=False):
+        posts = boards.models.Post.objects.annotate(images_count=Count(
+            'images')).filter(images_count__gt=0, threads__tags__in=[self])
+        if archived is not None:
+            posts = posts.filter(thread__archived=archived)
+        return posts.order_by('?').first()