{{/* The polled part of Overview, in the page and in its fragment (GET
     /overview/fragment) alike, so the two cannot drift apart: the Server health
     box, which polls (Box.Poll: panel.js reads its id and data-poll), and — in the
     fragment only — the page head marked to be swapped in by its id, so the stamp,
     the sentence and the time follow the cards. The fragment's primary element is
     the box, which replaces the one that asked; the head rides along out of band. */}}
{{define "overview_cards"}}{{template "box_open" .Health}}
{{template "health_cards" .Cards}}
{{template "box_close"}}{{end}}

{{define "overview_poll"}}{{template "page_head" .HeadOOB}}
{{template "overview_cards" .}}{{end}}