Johnny Chen

[Bugfix:InstructorUI] Cant use Notebook Builder in Gradeables

1

### Please check if the PR fulfills these requirements: * [ ] Tests for the changes have been added/updated (if possible) * [ ] Documentation has been updated/added if relevant...

[Bugfix:InstructorUI] Notebook Show JSON button returns errors

15

### Please check if the PR fulfills these requirements: * [ ] Tests for the changes have been added/updated (if possible) * [ ] Documentation has been updated/added if relevant...