backed out 648b42a75739, which was a NON-trivial whitespace commit. It broke the Typography class's string replacements, for instance
diff --git a/user_guide/installation/upgrade_152.html b/user_guide/installation/upgrade_152.html
index 136e309..f601a25 100644
--- a/user_guide/installation/upgrade_152.html
+++ b/user_guide/installation/upgrade_152.html
@@ -57,7 +57,7 @@
<h1>Upgrading from 1.5.0 to 1.5.2</h1>
-<p class="important"><strong>Note:</strong> The instructions on this page assume you are running version 1.5.0 or 1.5.1. If you
+<p class="important"><strong>Note:</strong> The instructions on this page assume you are running version 1.5.0 or 1.5.1. If you
have not upgraded to that version please do so first.</p>
<p>Before performing an update you should take your site offline by replacing the index.php file with a static one.</p>