[#1767] Fix bug with send_email_notifications not working with paster

The problem is that our validators notice that .send_email_notifications()
didn't call its auth functions and raise an Exception. But it shouldn't call
it's auth functions when being called with paster anyway, so it's correct.

This fixes that.

ckan/logic/action/update.py

@@ -1063,6 +1063,7 @@ def dashboard_mark_activities_old(context, data_dict):
         model.repo.commit()
 
 
+@logic.auth_audit_exempt
 def send_email_notifications(context, data_dict):
     '''Send any pending activity stream notification emails to users.
 

ckan/new_tests/logic/action/test_update.py

@@ -3,12 +3,16 @@
 
 import nose.tools
 import mock
+import pylons.config as config
 
 import ckan.logic as logic
 import ckan.new_tests.helpers as helpers
 import ckan.new_tests.factories as factories
 
 
+assert_raises = nose.tools.assert_raises
+
+
 def datetime_from_string(s):
     '''Return a standard datetime.datetime object initialised from a string in
     the same format used for timestamps in dictized activities (the format
@@ -385,3 +389,27 @@ def test_resource_reorder(self):
         assert reordered_resource_urls == ["http://b.html",
                                            "http://c.html",
                                            "http://a.html"]
+
+
+class TestUpdateSendEmailNotifications(object):
+    @classmethod
+    def setup_class(cls):
+        cls._original_config = dict(config)
+        config['ckan.activity_streams_email_notifications'] = True
+
+    @classmethod
+    def teardown_class(cls):
+        config.clear()
+        config.update(cls._original_config)
+
+    @mock.patch('ckan.logic.action.update.request')
+    def test_calling_through_paster_doesnt_validates_auth(self, mock_request):
+        mock_request.environ.get.return_value = True
+        helpers.call_action('send_email_notifications')
+
+    @mock.patch('ckan.logic.action.update.request')
+    def test_not_calling_through_paster_validates_auth(self, mock_request):
+        mock_request.environ.get.return_value = False
+        assert_raises(logic.NotAuthorized, helpers.call_action,
+                      'send_email_notifications',
+                      context={'ignore_auth': False})