Refactoring: vaccination

src/flask_covid19/__init__.py

src/flask_covid19/blueprints/app_all/all_service.py

src/flask_covid19/blueprints/app_web/app_admin_service.py

src/flask_covid19/blueprints/app_web/app_admin_views.py

...19/blueprints/app_web/templates/app_admin/admin_info.html

...9/blueprints/app_web/templates/app_admin/admin_tasks.html

...lates/app_admin/navigation/app_admin_navbar_dropdown.html

...web/templates/app_admin/navigation/app_admin_navtabs.html

...flask_covid19/blueprints/app_web/templates/usr/login.html

...app_web/templates/usr/navigation/usr_navbar_dropdown.html

...eprints/app_web/templates/usr/navigation/usr_navtabs.html

...ask_covid19/blueprints/app_web/templates/usr/profile.html

...k_covid19/blueprints/app_web/templates/usr/user_info.html

..._covid19/blueprints/app_web/templates/usr/user_tasks.html

...k_covid19/blueprints/app_web/templates/usr/usr_table.html

src/flask_covid19/blueprints/app_web/user_model.py

src/flask_covid19/blueprints/app_web/user_service.py

src/flask_covid19/blueprints/app_web/user_views.py

src/flask_covid19/blueprints/app_web/web_services.py

src/flask_covid19/blueprints/app_web/web_views.py