Fix minor styling issue in router setup page

modules/installed/router/templates/router_setup.html

@@ -63,12 +63,15 @@
 
 {% block sidebar_right_block %}
 
+  <div class="well sidebar-nav">
+
     <h3>Introduction</h3>
 
     <p>Your {{ cfg.box_name }} is a replacement for your wireless
       router.  By default, it should do everything your usual router
-    does.  With the addition of some extra modules, its abilities can
+      does.  With the addition of some extra modules, its abilities
-    rival those of high-end routers costing hundreds of dollars.</p>
+      can rival those of high-end routers costing hundreds of
+      dollars.</p>
 
     {% if cfg.users.expert %}
 
@@ -89,6 +92,8 @@
 
     {% endif %}
 
+  </div>
+
 {% endblock %}
 
 {% block js_block %}