Carry the linked nodes across Monitor jumps and clarify PBS web links

- A jump between Monitors carries the Monitors the source links, and the destination offers them in one dialog with a checkbox each
- The offer is not repeated in the same browser session after choosing Not now, and disappears once every node is known
- A Proxmox Backup Server without a Monitor is shown as its web interface, with its own icon
- The linked nodes form follows the edit-mode contrast rule, with a blue Add button
- New texts translated into all languages

AppImage/messages/pt/common.json

@@ -7375,6 +7375,10 @@
     "backTo": "Voltar para {name}",
     "cameFromTitle": "Adicionar nó Monitor?",
     "cameFromBody": "Adicione {name} aos nós vinculados deste Monitor.",
-    "notNow": "agora não"
+    "notNow": "agora não",
+    "knownTitle": "Adicionar nós vinculados?",
+    "knownBody": "{name} liga estes Monitores. Escolha os que quer adicionar a este Monitor.",
+    "addSelected": "Adicionar selecionados",
+    "pbsWebInterface": "Interface web do PBS"
   }
 }