Add interfaces menu.

biscuit/core/menus.py

 from django.urls import reverse
+from django.utils.translation import gettext as _
 
 from menu import Menu, MenuItem
 
@@ -9,3 +10,7 @@ Menu.add_item('main', MenuItem('Login',
 Menu.add_item('main', MenuItem('Logout',
                                reverse('logout'),
                                check=lambda request: request.user.is_authenticated))
+
+Menu.add_item('main', MenuItem(_('Interfaces'),
+                               '#',
+                               check=lambda request: request.user.is_authenticated))