erp5_data_notebook: Don't add Data Notebook Line if store_history is false....

erp5_data_notebook: Don't add Data Notebook Line if store_history is false. When polling ERP5 from Jupyter, I don't want to create a lot of Data Notebook Line.

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

@@ -77,6 +77,10 @@ def Base_executeJupyter(self, python_expression=None, reference=None, \
                                       reference=reference,
                                       batch_mode=True)
 
+  # By default, store_history is True
+  store_history = kw.get('store_history', True)
+  data_notebook_line = None
+  if store_history:
     # Add new Data Notebook Line to the Data Notebook
     data_notebook_line = data_notebook.DataNotebook_addDataNotebookLine(
                                        notebook_code=python_expression,
@@ -139,6 +143,7 @@ def Base_executeJupyter(self, python_expression=None, reference=None, \
       u'mime_type': result['mime_type']}
     serialized_result = json.dumps(result)
 
+  if data_notebook_line is not None:
     data_notebook_line.edit(
       notebook_code_result = result['code_result'],
       mime_type = result['mime_type'])