QUALITY: Add extra json helpers
QUALITY: Add extra json helpers

Ensure that JSON responses match ActiveRecord models parsed as
JSON

doubtfire-lms/doubtfire-api,doubtfire-lms/doubtfire-api,jakerenzella/doubtfire-api,jakerenzella/doubtfire-api,doubtfire-lms/doubtfire-api,jakerenzella/doubtfire-api,doubtfire-lms/doubtfire-api,alexcu/doubtfire-api,doubtfire-lms/doubtfire-api,alexcu/doubtfire-api,alexcu/doubtfire-api,jakerenzella/doubtfire-api,jakerenzella/doubtfire-api,doubtfire-lms/doubtfire-api,jakerenzella/doubtfire-api,alexcu/doubtfire-api,doubtfire-lms/doubtfire-api,alexcu/doubtfire-api,jakerenzella/doubtfire-api,alexcu/doubtfire-api