Build a list of P&C websites and expose it via the admin site to improve pre-election data collection

[keithamoss]

• Build a definitive database over time for all booths, all elections
• Expose websites relevant to the jurisdiction
• Allow users to tick off that they're checked, filter out websites with booths where we already have data points
• Something like the old 'Polling place types' interface

SELECT pp.premises, s.name, s.website, s.email, s.status, s.submitter_type FROM "demsausage"."app_stalls" AS s, "demsausage"."app_pollingplaces" AS pp WHERE ("website" IS DISTINCT FROM '') AND s.polling_place_id = pp.id ORDER BY pp.id DESC;