release: 0.6.0: Delivery detail page, DNS badge, machine metrics, wide layout

A page per delivery (`/deliveries/{id}`), reached from the *Details* link on
Added:
  - A page per delivery (`/deliveries/{id}`), reached from the *Details* link on
  - A **DNS** badge in the domain list, one per row, carrying the same
  - Machine metrics on the status page: a **Machine** card reporting the
  - An index of the current page's own sections in the navigation column, for the
Changed:
  - Every panel page is laid out in one column of the same width, so moving
  - The mark's small-size variant — the tab icon and the `SP` initials it
  - The stamp's `SELF-HOSTED SMTP RELAY` line is set at 11.5/0.15 instead of
  - The delivery log lists what identifies a message and nothing else: time,
  - Subjects are decoded for display as well as on the way in, so the rows the
  … (4 more in CHANGELOG)

Full detail: CHANGELOG.md (0.6.0).

internal/web/templates/deliveries_rows.html

@@ -4,18 +4,17 @@
   {{if .Rows}}
   <table>
     <thead>
-      <tr><th>Time</th><th>Domain</th><th>App</th><th>From</th><th>To</th><th>Subject</th><th>Status</th></tr>
+      <tr><th>Time</th><th>From</th><th>To</th><th>Subject</th><th>Status</th><th></th></tr>
     </thead>
     <tbody>
       {{range .Rows}}
       <tr>
         <td class="time muted">{{.CreatedAt.Format "2006-01-02 15:04:05"}}</td>
-        <td>{{.Domain}}</td>
-        <td>{{.AppLogin}}</td>
         <td>{{.From}}</td>
         <td>{{.To}}</td>
         <td class="subject"><span title="{{.Subject}}">{{.Subject}}</span></td>
         <td>{{.Status}}</td>
+        <td class="actions"><a href="/deliveries/{{.ID}}?domain={{$.FilterDomain}}&app={{$.FilterApp}}&p={{$.Page}}">Details</a></td>
       </tr>
       {{end}}
     </tbody>