Added a warning about using old references on Jupyter notebooks
This MR adds the following to all Jupyter notebooks:
- A warning when a user inputs a reference that has already been used in one of his old Jupyter notebooks.
- Some extra information when entering magics such as the remaining required magics.
- Entering the reference MUST now be the last magic entered(otherwise the reference check doesn't work).
- A small addition to the message at the top of the notebook for the command
%notebook_set_title
Also, do note that the edited kernel uses files from this commit from my erp5 repo, so the changes there must be available for the kernel to work. This merge request addresses those changes.
Sample screenshot:
