The new and improved OCL terminology service v2

1. sysctl -w vm.max_map_count=262144 #required by Elasticsearch
2. docker-compose up -d
3. Go to http://localhost:8000/swagger/ to benefit.

1. Pylint (pep8) --- docker exec -it oclapi2_api_1 pylint -j2 core
2. Coverage -- docker exec -it oclapi2_api_1 bash coverage.sh
3. Tests --- docker exec -it oclapi2_api_1 python manage.py test --keepdb -v3