Prototype concept and scheme serializers #103

[jacobtylerwalls]

Description

Testing/demo instructions (work in progress)

• general project setup updated in Spruce up installation instructions #109
• consider pip install ipython to get tab completion on object attributes in a manage.py shell while you poke around
  - ensure you've reloaded graphs from main to get slugs set on concept & graph models
• checkout core branch jtw/pythonic-resource-models
• checkout arches-references branch jtw/pythonic-resource-models-compatibility
• view the browsable apis referred to in urls.py
  • example: schemes list
• NOTE: for resource instance creates, when posting back, you'll need to fiddle with the form entry for I18n_TextField's like name, by putting in some json like {"en": "some value"}

Closes #103

[jacobtylerwalls]

Be aware if using the DRF browsable API that some slowness might be added by the rendering of some of the form inputs. Add this to settings_local.py to temporary disable the browsable API if testing against a lot of data:

The relevant override is the DEFAULT_RENDERER_CLASSES:

REST_FRAMEWORK = {
    "DEFAULT_PERMISSION_CLASSES": ["rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly"],
    "DEFAULT_RENDERER_CLASSES": ("rest_framework.renderers.JSONRenderer",)
}