Add timezone and team to hovercards

With #170, hovercards now look like this:

The short bio isn't that useful however, and the profile sidebar (#171) shows the long bio already. Instead, we should replace this with timezone information and team per #149. We need to first get this data.

## Timezones

Timezone data is already available in HM Time. We should check that this is accurate, and then add it into the existing responses rather than only having it available via the separate hm-time endpoint(s).

## Team

We don't have a strong definition of teams right now, particularly for engineers. Once we do, this data needs to be added to Facts. Once _that's_ also done, we can add it to hovercards.