Jupytor: Fix a mistake of the previous commit. importlib is needed.

bt5/erp5_data_notebook/ExtensionTemplateItem/portal_components/extension.erp5.JupyterCompile.py

@@ -15,6 +15,7 @@ import json
 import transaction
 import Acquisition
 import astor
+import importlib
 from Products.ERP5Type.Log import log
 
 # Display matplotlib figure automatically like