Switch to side-by-side view

--- a/Allura/allura/controllers/repository.py
+++ b/Allura/allura/controllers/repository.py
@@ -2,6 +2,7 @@
 import json
 import logging
 import re
+import difflib
 from urllib import quote, unquote
 from collections import defaultdict
 
@@ -16,7 +17,6 @@
 from ming.orm import ThreadLocalORMSession, session
 
 import allura.tasks
-from allura.lib import patience
 from allura.lib import security
 from allura.lib import helpers as h
 from allura.lib import widgets as w
@@ -520,7 +520,7 @@
         b = self._blob
         la = list(a)
         lb = list(b)
-        diff = ''.join(patience.unified_diff(
+        diff = ''.join(difflib.unified_diff(
                 la, lb,
                 ('a' + apath).encode('utf-8'),
                 ('b' + b.path()).encode('utf-8')))