Improve and simplify access control sql and load options. Also closes #2

api/src/api/authentication.py

api/src/api/routes/__init__.py

api/src/api/routes/courses.py

api/src/api/routes/job.py

api/src/api/routes/media_process.py

api/src/api/routes/object_modifications.py

api/src/api/routes/resources.py

api/src/api/routes/site.py

api/src/api/routes/user.py

api/tests/__init__.py

api/tests/routes/courses.py

api/tests/routes/object_modifications.py

common_py/src/videoag_common/api_object/__init__.py

common_py/src/videoag_common/api_object/fields/field.py

...c/videoag_common/api_object/fields/relationship_fields.py

common_py/src/videoag_common/api_object/object.py

common_py/src/videoag_common/api_object/object_class.py

common_py/src/videoag_common/media_process/basic_targets.py

common_py/src/videoag_common/miscellaneous/__init__.py

common_py/src/videoag_common/miscellaneous/errors.py