From e0f30606299c7cc067263cbfd9b9f5a8a6733093 Mon Sep 17 00:00:00 2001
From: Christopher Wilcox <git@crwilcox.com>
Date: Thu, 13 Aug 2015 14:23:26 -0700
Subject: [PATCH] Add rel=noreferrer to helplink URLs as sending the referrer
 link is unnecessary

Currently, links that go to external sites are getting the referrer
url, which for things like tmpnb, is a secret. This avoids us sending
along unnecessary information to possibly third party sites.
---
 notebook/templates/notebook.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/notebook/templates/notebook.html b/notebook/templates/notebook.html
index cb0f9fecc..c916858c5 100644
--- a/notebook/templates/notebook.html
+++ b/notebook/templates/notebook.html
@@ -267,7 +267,7 @@ data-notebook-path="{{notebook_path}}"
 
                         {% for helplinks in sections %}
                             {% for link in helplinks %}
-                                <li><a href="{{link[0]}}" {{'target="_blank" title="Opens in a new window"' if link[2]}}>
+                                <li><a rel="noreferrer" href="{{link[0]}}" {{'target="_blank" title="Opens in a new window"' if link[2]}}>
                                 {{'<i class="fa fa-external-link menu-icon pull-right"></i>' if link[2]}}
                                 {{link[1]}}
                                 </a></li>