Pause blocking, blocked clients and a blocked line in the statistics, compact view picker

jarl block pause|resume (and the Blocking page) lets every name through
for a while; jarld resumes on time. The lists stay loaded: the rules zone
just passes everything. Statistics gain the clients with the most blocked
queries and blocked queries on the queries chart. The view choice in the
blocking forms is a dropdown.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/web/static/assets/pages/dashboard.js

@@ -1,4 +1,4 @@
-import { h, mount, time, relTime, problemsList, badge, plural } from "../ui.js";
+import { h, mount, time, fmtTime, relTime, problemsList, badge, plural } from "../ui.js";
 import { get, state } from "../api.js";
 
 export async function render(el) {
@@ -40,6 +40,10 @@ export async function render(el) {
       h("strong", null, "The last backup failed "), time(b.last_error_at), ": " + b.last_error,
       h("div", { class: "small" }, "See 'journalctl -u jarl-backup' on the server.")));
   }
+  if (st.blocking_paused_until) {
+    parts.push(h("div", { class: "msg info" },
+      h("strong", null, "Blocking is paused until " + fmtTime(st.blocking_paused_until) + "."), " It resumes by itself. ", h("a", { href: "#/blocking" }, "Blocking")));
+  }
   for (const e of st.blocklist_errors || []) {
     parts.push(h("div", { class: "msg warn" },
       h("strong", null, "Blocklist " + e.name + " couldn't be updated: "), e.error + ". ",