add protection against requesting direct service files

zefie_wtvp_minisrv/ServiceVault/wtv-head-waiter/login.js

@@ -1,3 +1,5 @@
+var minisrv_service_file = true;
+
 var challenge_response, challenge_header = "";
 
 var gourl = "wtv-head-waiter:/login-stage-two?";