User: Don't let deactivated users authenticate.

lib/pleroma/user.ex

@@ -70,6 +70,8 @@ defmodule Pleroma.User do
   def auth_active?(%User{info: %User.Info{confirmation_pending: true}}),
     do: !Pleroma.Config.get([:instance, :account_activation_required])
 
+  def auth_active?(%User{info: %User.Info{deactivated: true}}), do: false
+
   def auth_active?(%User{}), do: true
 
   def visible_for?(user, for_user \\ nil)