Setup dev/prod data

[ebidel]

For dev/testing, it would be a good idea to keep our prod data separate from dev. Especially once we have users :)

• Cloud storage buckets for dev/prod. (Already have buckets defined for prod (webdotdevsite.appspot.com) and staging (staging.webdotdevsite.appspot.com)
• Firestore urls for dev/prod. Need to set this up.

And probably control it with an ENV flag when you start server.mjs.