Give each view its own page, and add a CNAME from an A record

Views open a page like a zone's, with Settings, Options and Zones tabs
(and New zone in that view); the Views page lists and orders them. A
and AAAA records get a + CNAME button that fills in the add form.

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

CHANGELOG.md

@@ -61,6 +61,13 @@ All notable changes to Jarl are documented here. The format follows
 
 ### Changed
 
+- Web UI: each view has its own page, like a zone: Settings (match lists,
+  comment, colour), Options and Zones tabs (with **New zone in VIEW**),
+  and Delete. The Views page lists them in order, with the arrows that
+  reorder them; view links everywhere open the view's page.
+- Web UI: A and AAAA records have a **+ CNAME** button that fills in the
+  add form with a CNAME pointing to the record's name, leaving only the
+  alias's name to type.
 - Options are kept in one fixed order, in named.conf, the web UI and the
   CLI: grouped by topic (files, listening, access control, recursion and
   forwarding, DNSSEC, transfers and notify, then the rest), alphabetical