fix ecto brain damage

lib/philomena_web/textile_renderer.ex

@@ -110,6 +110,7 @@ defmodule PhilomenaWeb.TextileRenderer do
     |> Enum.flat_map(fn t ->
       Regex.scan(~r|>>(\d+)|, t, capture: :all_but_first)
       |> Enum.map(fn [first] -> String.to_integer(first) end)
+      |> Enum.filter(&(&1 < 2147483647))
     end)
     |> load_images()
   end