Update MPX map time series

[ksewalk]

Update time series to use updated data stream.

[ksewalk]

Methods to assign time_stamps should be reviewed to display date last updated by source for a specific country on the map, and not the date the data was retrieved from GitHub.

[ksewalk]

G.h Data will not be updated as of 9/22

We will create a V2 visualization for WHO data

Create banner to inform users

[abhidg]

Moving to P1 as this is not immediate priority for 2022-09-23