Merge branch 'feature/issue-2-create-toilet-code-models' into develop
Merge branch 'develop' into feature/issue-5-rest-api-for-issues
Add tests for toilet issue views.
Remove unused import.
Create helpers for more stable test serializations.
Add tests for toilet issue serializer.
Add helper for canonicalizing serialized issues.
Merge branch 'feature/issue-5-rest-api-for-issues' into feature/issue-4-rest-api-for-codes