Add map of states in the US to the country pagae for USA

[pgriggs]

• data source, total vaccinations per state: https://github.com/govex/COVID-19/blob/master/data_tables/vaccine_data/raw_data/vaccine_data_us_state_timeline.csv

• Make map same as map on homepage for US states.

• put below the fold on the country page.

• add sortable data table below this map of all of the states

-- table columns: name, days to herd, total vaccinations, daily vaccination moving average as percent of population, percent of population vaccinated