Refactoring: vaccination

src/flask_covid19/blueprints/app_admin/__init__.py

src/flask_covid19/blueprints/app_admin/templates/__init__.py

src/flask_covid19/blueprints/app_mq/__init__.py

src/flask_covid19/blueprints/app_mq/application_workers.py

src/flask_covid19/blueprints/app_user/__init__.py

src/flask_covid19/blueprints/app_user/templates/__init__.py

src/flask_covid19/blueprints/app_web/web_model_factory.py

src/flask_covid19/blueprints/app_web/web_model_transient.py

...flask_covid19/blueprints/data_divi/divi_service_import.py

...flask_covid19/blueprints/data_divi/divi_service_update.py

src/flask_covid19/blueprints/data_divi/divi_test_views.py

...flask_covid19/blueprints/data_ecdc/ecdc_service_import.py

...flask_covid19/blueprints/data_ecdc/ecdc_service_update.py

...flask_covid19/blueprints/data_owid/owid_service_import.py

...flask_covid19/blueprints/data_owid/owid_service_update.py

src/flask_covid19/blueprints/data_rki/rki_service_import.py

src/flask_covid19/blueprints/data_rki/rki_service_update.py

...blueprints/data_vaccination/vaccination_service_import.py

...blueprints/data_vaccination/vaccination_service_update.py

src/flask_covid19/blueprints/data_who/who_service_import.py