Fix nav and layout for TwoFactorAuthsController

app/controllers/profiles/two_factor_auths_controller.rb

-class Profiles::TwoFactorAuthsController < ApplicationController
+class Profiles::TwoFactorAuthsController < Profiles::ApplicationController
   def new
     unless current_user.otp_secret
       current_user.otp_secret = User.generate_otp_secret

app/views/layouts/nav/_profile.html.haml

@@ -4,7 +4,7 @@
       = icon('user fw')
       %span
         Profile
-  = nav_link(controller: :accounts) do
+  = nav_link(controller: [:accounts, :two_factor_auths]) do
     = link_to profile_account_path, title: 'Account', data: {placement: 'right'} do
       = icon('gear fw')
       %span