FB:Minor fix

templates/base.html

@@ -4,6 +4,7 @@
     <title>{%block title%}BBS{%endblock%}</title>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="x-django-static-url" content="{{ STATIC_URL }}">
     <link rel="stylesheet" href="{{ STATIC_URL }}stylesheets/screen.css" type="text/css" media="screen, projection">
     <link rel="stylesheet" href="{{ STATIC_URL }}stylesheets/print.css" type="text/css" media="print"> 
     <!--[if lt IE 8]>