Finalized theme loading and stuff

app/controllers/settings/base_controller.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+class Settings::BaseController < ApplicationController
+  layout 'admin'
+
+  before_action :authenticate_user!
+  before_action :set_pack
+
+  def set_pack
+    use_pack 'settings'
+  end
+end