Fix post ordering in reply view

I think this was database-specific. Replies should now be ordered by
their ID.

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

board/templates/board/post_detail.html

@@ -44,7 +44,7 @@
 {# posts #}
 <div class="row thread">
     {% include "board/post_snippet.html" %}
-    {% for post in post.replies.all %}
+    {% for post in replies %}
     <div class="row reply">
         {% include "board/post_snippet.html" %}
     </div>

board/views.py

@@ -240,7 +240,9 @@ class PostView(TemplateView):
     def get_context_data(self, **kwargs):
         kwargs["board"] = self.board
         post_id = self.kwargs["id"]
-        kwargs["post"] = get_object_or_404(Post, id=post_id)
+        post = get_object_or_404(Post, id=post_id)
+        kwargs["post"] = post
+        kwargs["replies"] = post.replies.all().order_by("id")
         kwargs["max_upload_size"] = settings.MAX_UPLOAD_SIZE
         return super(PostView, self).get_context_data(**kwargs)