Switch to side-by-side view

--- a/scripts/migrations/004-make-attachments-polymorphic.py
+++ b/scripts/migrations/004-make-attachments-polymorphic.py
@@ -1,6 +1,6 @@
 import logging
 
-from pylons import c
+from pylons import tmpl_context as c
 
 from ming.orm import ThreadLocalORMSession
 from allura import model as M