Add VMs to the database even with HUB_MODE=mock

Closes ~cyberia/services#83

capsulflask/__init__.py

@@ -140,7 +140,7 @@ else:
 app.config['HTTP_CLIENT'] = MyHTTPClient(timeout_seconds=int(app.config['INTERNAL_HTTP_TIMEOUT_SECONDS']))
 
 app.config['BTCPAY_ENABLED'] = False
-if app.config['BTCPAY_URL'] != "":
+if app.config['BTCPAY_URL'] is not "":
   try:
     app.config['BTCPAY_CLIENT'] = btcpay.Client(api_uri=app.config['BTCPAY_URL'], pem=app.config['BTCPAY_PRIVATE_KEY'])
     app.config['BTCPAY_ENABLED'] = True