Task LEI-86: Adapt specification model and tests to match model changes

.gitattributes

...MR/src/lsmr/lsmrapp/migrations/0002_auto_20190425_1501.py

SAS/LSMR/src/lsmr/lsmrapp/migrations/0003_populate.py

SAS/LSMR/src/lsmr/lsmrapp/models/scheduling.py

SAS/LSMR/src/lsmr/lsmrapp/models/specification.py

SAS/LSMR/src/lsmr/lsmrapp/serializers/scheduling.py

SAS/LSMR/src/lsmr/lsmrapp/serializers/specification.py

SAS/LSMR/src/lsmr/lsmrapp/viewsets/scheduling.py

SAS/LSMR/src/lsmr/lsmrapp/viewsets/specification.py

SAS/LSMR/src/lsmr/urls.py

SAS/LSMR/src/migrate_momdb_to_lsmr.py

SAS/LSMR/src/templates/react_jsonschema_form.html

SAS/LSMR/test/t_lsmrapp_scheduling_django.py

SAS/LSMR/test/t_lsmrapp_scheduling_functional.py

SAS/LSMR/test/t_lsmrapp_specification_django.py

SAS/LSMR/test/t_lsmrapp_specification_functional.py

SAS/LSMR/test/t_lsmrapp_specification_functional.run