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>

docs/blocking.md

@@ -17,6 +17,7 @@ does the blocking itself; jarld only prepares the lists.
 - [Your rules](#your-rules)
 - [Blocklists](#blocklists)
 - [Checking a name](#checking-a-name)
+- [Pausing](#pausing)
 - [Statistics](#statistics)
 - [Memory and performance](#memory-and-performance)
 - [How it works](#how-it-works)
@@ -163,13 +164,31 @@ Views without blocking aren't listed.
 In the web UI a blocked name gets an **Allow** button, and the statistics'
 most blocked names link to this check.
 
+## Pausing
+
+To see whether blocking is what breaks a site, pause it: every name is
+answered normally until the time is up (at most a day), then blocking
+resumes by itself, also if jarld was restarted in between.
+
+```sh
+jarl block pause          # 10 minutes; or: jarl block pause 1h
+jarl block resume         # end it now
+```
+
+In the web UI, **Pause blocking** is at the top of the Blocking page, and
+the dashboard says while blocking is paused. The lists stay loaded (the
+rules zone just lets everything through), so pausing and resuming take
+effect within a second. Pausing and resuming are recorded in the history
+like other changes.
+
 ## Statistics
 
 With [query statistics](stats.md) on (including `query_log`), Jarl counts
-what blocking does: blocked queries over time and as a share of all
-queries, which rules and lists blocked them, and the most blocked names
-(`jarl stats summary`, `jarl stats top blocked`, `jarl stats breakdown
-blocklist`). Blocked answers are left out of the NXDOMAIN figures, which
+what blocking does: blocked queries over time (next to all queries) and
+as a share of them, which rules and lists blocked them, the most blocked
+names, and the clients with the most blocked queries (`jarl stats summary`,
+`jarl stats top blocked`, `jarl stats top blocked-clients`, `jarl stats
+breakdown blocklist`). Blocked answers are left out of the NXDOMAIN figures, which
 are about names that really don't exist.
 
 Without statistics named doesn't log what it blocks at all.