Added mix commands to manage users and view actors

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/mobilizon/actors/actors.ex

@@ -156,7 +156,7 @@ defmodule Mobilizon.Actors do
   def get_actor_by_name_with_preload(name, type \\ nil) do
     name
     |> get_actor_by_name(type)
-    |> Repo.preload(:organized_events)
+    |> Repo.preload([:organized_events, :user])
   end
 
   @doc """