Refactoring: vaccination

src/flask_covid19/blueprints/data_owid/owid_views.py

...owid/templates/owid/continent/all/owid_continent_all.html

...tes/owid/continent/all/owid_continent_all_pagination.html

...emplates/owid/continent/all/owid_continent_all_table.html

...owid/templates/owid/continent/one/owid_continent_one.html

...tes/owid/continent/one/owid_continent_one_pagination.html

...ata_owid/templates/owid/country/all/owid_country_all.html

...mplates/owid/country/all/owid_country_all_pagination.html

...id/templates/owid/country/all/owid_country_all_table.html

...mplates/owid/country/all/owid_country_all_table_head.html

...plates/owid/country/germany/owid_country_one_germany.html

.../country/germany/owid_country_one_germany_pagination.html

...ata_owid/templates/owid/country/one/owid_country_one.html

...mplates/owid/country/one/owid_country_one_pagination.html

...plates/owid/date_reported/all/owid_date_reported_all.html

.../date_reported/all/owid_date_reported_all_pagination.html

.../owid/date_reported/all/owid_date_reported_all_table.html

...ported/cases/owid_date_reported_one_cases_cumulative.html

...s/owid_date_reported_one_cases_cumulative_pagination.html

...date_reported/cases/owid_date_reported_one_cases_new.html