feat: review snoozed deadline reminders (Closes #1104)

frontend/index.html

@@ -260,6 +260,13 @@
         <button id="empty-work-create" type="button">Create an issue</button>
       </div>
     </section>
+    <section class="deadline-snooze" id="deadline-snooze" aria-labelledby="deadline-snooze-heading" hidden>
+      <div>
+        <strong id="deadline-snooze-heading">Deadline reminders paused</strong>
+        <p class="small" id="deadline-snooze-status" role="status" aria-live="polite"></p>
+      </div>
+      <button id="review-snoozed-deadlines" type="button">Review now</button>
+    </section>
     <section class="agenda-replan" id="agenda-replan" aria-labelledby="agenda-replan-heading" hidden>
       <div class="agenda-replan-launch">
         <div><strong id="agenda-replan-heading">Overdue deadlines</strong><p class="small muted">Make the Agenda credible without leaving the queue.</p></div>