Button to add new section in editing view is missing
Expected behaviour
There should be a button to add a new section on the left of the screen in the OEN instance
Current behaviour
There is no button to add a new section on the left of the screen in the OEN instance
Steps to reproduce
- Go to the OEN instance
- Open any book and go edit any chapter
- Try add a new section (there is no button for that but there used to be one)