Remove password confirmation in config app

Small fix to manually clean up temp dir when creating new temp dir,
small fix to font awesome icons, change the jwt/keystone
validators to not use username/password

data/users/externaljwt.py

@@ -39,6 +39,7 @@ class ExternalJWTAuthN(FederatedUsers):
 
   def ping(self):
     result = self.client.get(self.getuser_url, timeout=2)
+    # We expect a 401 or 403 of some kind, since we explicitly don't send an auth header
     if result.status_code // 100 != 4:
       return (False, result.text or 'Could not reach JWT authn endpoint')