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/fr/common.json

@@ -7375,6 +7375,10 @@
     "backTo": "Retour à {name}",
     "cameFromTitle": "Ajouter un nœud Moniteur ?",
     "cameFromBody": "Ajoutez {name} aux nœuds liés de ce moniteur.",
-    "notNow": "Pas maintenant"
+    "notNow": "Pas maintenant",
+    "knownTitle": "Ajouter des nœuds liés ?",
+    "knownBody": "{name} relie ces moniteurs. Choisissez ceux à ajouter à ce moniteur.",
+    "addSelected": "Ajouter la sélection",
+    "pbsWebInterface": "Interface web de PBS"
   }
 }