Switch to side-by-side view

--- a/Allura/allura/templates/widgets/thread_widget.html
+++ b/Allura/allura/templates/widgets/thread_widget.html
@@ -40,7 +40,7 @@
     <div class="row reply">
     	<div class="column grid_1 tcenter">
     		<p class="gravatar">
-              {{lib.gravatar(c.user)}}<br/><br/>
+              {{lib.gravatar(c.user, size=48)}}<br/><br/>
     			<a href="{{c.user.url()}}">{{c.user.display_name}}</a>
     		</p>
     	</div>