Replaced schedule term with timeslot. #14

src/models.py

src/rest/controllers/internal_controller.py

src/rest/models/__init__.py

src/rest/models/clock_info.py

src/rest/models/play_log.py

src/rest/models/timeslot.py

src/rest/models/track.py

src/rest/swagger/swagger.yaml

src/rest/test/test_internal_controller.py

src/service.py