Fix Kerberos 401 page

app/controllers/omniauth_callbacks_controller.rb

@@ -78,6 +78,11 @@ class OmniauthCallbacksController < Devise::OmniauthCallbacksController
     handle_omniauth
   end
 
+  def kerberos_spnego
+    oauth['provider'] = 'kerberos'
+    handle_omniauth
+  end
+
   private
 
   def handle_omniauth

app/views/errors/kerberos_denied.html.haml

@@ -2,6 +2,7 @@
 %h1 401
 %h3 Kerberos SPNEGO authentication failed
 %hr
-%p Return to the
+%p
+  Return to the
   = succeed "." do
-    = link_to new_user_session_path, 'sign-in page'
+    = link_to 'sign-in page', new_user_session_path