Added good_users field to defaults

  good_users is the whitelist of IP addresses, simply add your ip so you
don't get blocked on accidental wrong passwords. (Unless you like
waiting the sum odd hours till your IP get's unblocked)

config.py

@@ -53,6 +53,7 @@ def load_config():
                 "nginx",
                 "admin"
             ],
+            "good_users": []
         }
         save_config(defaults)
         return defaults