Handle kobo auth request

Handle access from localhost for kobo

cps/templates/generate_kobo_auth_url.html

@@ -2,10 +2,10 @@
 {% block body %}
 <div class="well">
   <p>
-    {{_('Open the .kobo/Kobo eReader.conf file in a text editor and add (or edit):')}}</a>.
+    {{_('Open the .kobo/Kobo eReader.conf file in a text editor and add (or edit):')}}</a>
   </p>
   <p>
-    {{_('api_endpoint=')}}{{kobo_auth_url}}</a>
+    {% if not warning %}{{_('api_endpoint=')}}{{kobo_auth_url}}{% else %}{{warning}}{% endif %}</a>
   </p>
   <p>
     {{_('Please note that every visit to this current page invalidates any previously generated Authentication url for this user.')}}</a>