WIP Add admin settings pages, reserved username config

Prototyping settings forms

app/controllers/admin/settings_controller.rb

@@ -0,0 +1,12 @@
+class Admin::SettingsController < Admin::BaseController
+  before_action :set_current_section
+
+  def index
+  end
+
+  private
+
+  def set_current_section
+    @current_section = :settings
+  end
+end