Secondary Dashboard and Navigation

Updated a unified secondary navigation for consistency across related pages, and to make it easier to find the new Health Dashboard. Working with card/tile based dashboards for some data types has tested really well so far. Bridging the gap between at-a-glance casual weather users and every-point-possible weather enthusiasts has long been a challenge. Progressive revelation via simple cards revealing full details seems to serve both users, though testing and analytics will tell more.