Tweak urls.py to support django 1.6.

ping/urls.py

@@ -1,4 +1,8 @@
-from django.conf.urls.defaults import patterns, include, url
+try: # django.conf.urls.defaults was removed in django 1.6
+  from django.conf.urls.defaults import patterns, include, url
+except:
+  from django.conf.urls import patterns, include, url
+
 from ping.views import status
 
 urlpatterns = patterns('',

ping/views.py

@@ -1,6 +1,6 @@
 from django.http import HttpResponse
 from django.conf import settings
-from django.utils import simplejson
+import json
 from django.contrib.auth.decorators import login_required
 from django.views.decorators.csrf import csrf_exempt
 
@@ -28,11 +28,11 @@ def status(request):
 
     if request.GET.get('fmt') == 'json':
         try:
-            response = simplejson.dumps(response_dict)
+            response = json.dumps(response_dict)
         except UnboundLocalError:
             response_dict = checks(request)
-            response = simplejson.dumps(response_dict)
-        response = simplejson.dumps(response_dict, sort_keys=True)
+            response = json.dumps(response_dict)
+        response = json.dumps(response_dict, sort_keys=True)
         mimetype = 'application/json'  
 
     return HttpResponse(response, mimetype=mimetype, status=200)