added licenced vs nonlicenced distinction

docker-django.env.dev

drugstone/management/commands/import_from_nedrex.py

drugstone/management/includes/DatasetLoader.py

drugstone/settings/settings.py

drugstone/urls.py

drugstone/views.py

scripts/docker-entrypoint.sh

tasks/betweenness_centrality.py

tasks/closeness_centrality.py

tasks/degree_centrality.py

tasks/multi_steiner.py

tasks/network_proximity.py

tasks/trust_rank.py