Sector risk

Sector risk analysis from the Redis indexes the sync job builds (no live HTTP). With sector, the 200 body is that sector's cached object (keys owned by the sync job, among them sector, attacksThisMonth, topGroups[{name, …}]); 404 when nothing is cached for it. Without sector, {"sectors": […]} holds every cached sector sorted by attacksThisMonth descending, each carrying press{sector, recentPressCount, latestPressDate, topPressTitle, topPressUrl, topCitedGroups[{name, count}]} when press=true. Costs one request of the monthly quota.