Nextclade Web: consider rethinking dataset badges

[ivan-aksamentov]

Reported by @tsibley here

External datasets like this are tagged "community", e.g.

and while I get why this is, it feels potentially pretty confusing to users. In particular because a) this is an official nextstrain.org core dataset and b) nextstrain.org has its own meaning for "community dataset". Should we rethink the UI here a little? Mark https://nextstrain.org core datasets as "official"? Or with some other label than "community"? (These are unification/integration pains, which feel hard, but also worth it.)