merge aircox and aircox_instance

aircox_cms/utils.py

@@ -0,0 +1,10 @@
+
+from django.core.urlresolvers import reverse
+from wagtail.wagtailimages.utils import generate_signature
+
+def image_url(image, filter_spec):
+    signature = generate_signature(image.id, filter_spec)
+    url = reverse('wagtailimages_serve', args=(signature, image.id, filter_spec))
+    url += image.file.name[len('original_images/'):]
+    return url
+