Put value boxes back *somewhere*

[UArizonaCampusLivingLabforGSI]

Test moving the value bar to the sidebar.

[Aariq]

If they don't fit well in sidebar or elsewhere, they might be good in a "home" tab along with some text describing the project and linking to the homepage.

[Aariq]

For value boxes:

• Air temp: most recent value for each location
• Soil temp: same
• Precip: date of last rain and how much? or cumulative (since the start of the year) for each site.