Switch to side-by-side view

--- a/Allura/allura/templates/repo/commit.html
+++ b/Allura/allura/templates/repo/commit.html
@@ -1,4 +1,4 @@
-{% extends 'repo/repo_master.html' %}
+{% extends 'allura:templates/repo/repo_master.html' %}
 
 {% block title %}
   {{c.project.name}} / {{c.app.config.options.mount_label}} / Commit {{commit.shorthand_id()}}