Evaluate unused database tables

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There are a handful of database tables that are no longer used, e.g. caladdress. The application hasn't used these for about 5 years.

We should sort through them, keep what's needed, and clear out what isn't:

• Back them up in full and retain the data
• Determine if any of them may be useful for application purposes in the foreseeable future; keep those tables, if any
• Determine if any of them contain data that could be moved into the main database tables; if so, migrate the data
• Determine if any of them have data that's unlikely to change and are OK to share publicly; if so, export it as static content and make a page for it
• Drop any unused tables, via migration script(s)
• Update the services/db/seed/setup.sql script