Each marker bound both a hover tooltip and a click popup. On the map page the
click handler routes to the detail page, so the popup opened and the
navigation discarded it in the same tick - it was never visible. Where it did
render (the map editor and the picker forms) its 'View Details' link only
served to pull the user off an unsaved form.
Keep hover as a glance and leave the click to the consumer. Removes the popup
markup, its styles, and the two now-unused detail-route helpers.
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