Make the max_body_size & max_buffer_size configurable

Author: mociarain

notebook/notebookapp.py

@@ -240,11 +240,6 @@ def init_settings(self, jupyter_app, kernel_manager, contents_manager,
             iopub_data_rate_limit=jupyter_app.iopub_data_rate_limit,
             rate_limit_window=jupyter_app.rate_limit_window,
 
-            # maximum request sizes - support saving larger notebooks
-            # tornado defaults are 100 MiB, we increase it to 0.5 GiB
-            max_body_size = 512 * 1024 * 1024,
-            max_buffer_size = 512 * 1024 * 1024,
-
             # authentication
             cookie_secret=jupyter_app.cookie_secret,
             login_url=url_path_join(base_url,'/login'),