deny robots via html meta

inventory_project/templates/admin/base_site.html

@@ -3,6 +3,7 @@
 
 {% block extrahead %}{{ block.super }}
     <meta name="google" content="notranslate">
+    <meta name="robots" content="noindex,nofollow" />
     <link rel="stylesheet" type="text/css" href="{% static 'inventory.css' %}">
 {% endblock %}