Change models, new migrations, fix front and make tests work

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

lib/eventos_web/controllers/page_controller.ex

@@ -1,6 +1,7 @@
 defmodule EventosWeb.PageController do
   use EventosWeb, :controller
-  import Logger
+
+  plug :put_layout, false
 
   def index(conn, _params) do
     render conn, "index.html"