Switch to side-by-side view

--- a/Allura/allura/lib/app_globals.py
+++ b/Allura/allura/lib/app_globals.py
@@ -75,7 +75,7 @@
         self.oid_store = M.OpenIdStore()
 
         # Setup pygments
-        self.pygments_formatter = pygments.formatters.HtmlFormatter(
+        self.pygments_formatter = utils.LineAnchorCodeHtmlFormatter(
             cssclass='codehilite',
             linenos='inline')