Add Ordering on API Post and Threads Model

lib/diskuy/forum.ex

@@ -116,7 +116,8 @@ defmodule Diskuy.Forum do
 
   """
   def list_threads do
-    Repo.all(Thread)
+    query = from t in Thread, order_by: t.inserted_at
+    Repo.all(query)
   end
 
   @doc """
@@ -212,7 +213,8 @@ defmodule Diskuy.Forum do
 
   """
   def list_posts do
-    Repo.all(Post)
+    query = from p in Post, order_by: p.inserted_at
+    Repo.all(query)
   end
 
   @doc """