make base template a bit more bootstrap friendly, stick in a container div

binder/templates/base.htm

@@ -11,6 +11,7 @@
   <script src="http://code.jquery.com/jquery.js"></script>
   <script src="{{ STATIC_URL }}bootstrap/js/bootstrap.min.js"></script>
 
+<div class="container-fluid">
 <div class="row-fluid">
   <div class="span2">
     {% block navigation %}
@@ -46,6 +47,7 @@
     {% endblock body %}
   </div>
 </div>
+</div>
 </body>
 
 {% block footer %}