Refactor settings controllers (#14767)

- Disallow suspended accounts from revoking sessions and apps
- Allow suspended accounts to access exports

app/controllers/settings/migration/redirects_controller.rb

@@ -1,13 +1,10 @@
 # frozen_string_literal: true
 
 class Settings::Migration::RedirectsController < Settings::BaseController
-  layout 'admin'
-
-  before_action :authenticate_user!
-  before_action :require_not_suspended!
-
   skip_before_action :require_functional!
 
+  before_action :require_not_suspended!
+
   def new
     @redirect = Form::Redirect.new
   end
@@ -38,8 +35,4 @@ class Settings::Migration::RedirectsController < Settings::BaseController
   def resource_params
     params.require(:form_redirect).permit(:acct, :current_password, :current_username)
   end
-
-  def require_not_suspended!
-    forbidden if current_account.suspended?
-  end
 end