* Support image uploads in the "notes" markdown fields
- Implemented using the existing EasyMDE library
- Copy / paste support
- Drag / drop support
* Remove debug message
* Updated API version
* Better UX when saving notes
* Pin PIP version (for testing)
* Bug fixes
- Fix typo
- Use correct serializer type
* Add unit testing
* Update role permissions
* Typo fix
* Update migration file
* Adds a notes mixin class to be used for refactoring
* Refactor existing models with notes to use the new mixin
* Add helper function for finding all model types with a certain mixin
* Refactor barcode plugin to use new method
* Typo fix
* Add daily task to delete old / unused notes
* Bug fix for barcode refactoring
* Add unit testing for function
