i18n: help modal chrome + webhooks table + sidebar tab

- Help: Fermer l'aide, Masquer l'aide, Effacer -> data-i18n
- Sidebar: Filtres de chemin, Tous les vaults, Sauvegardes -> data-i18n
- Webhooks table: 6 event trigger cells -> data-i18n
- Added 12 new keys to en.json/fr.json

frontend/locales/en.json

@@ -1057,5 +1057,17 @@
   "help.webhook_note": "Note: the event",
   "help.tip_use_tags": "Use tags",
   "help.tip_hide_sidebar": "Hide the sidebar",
-  "help.tip_sidebar_filter": "Use sidebar filtering"
+  "help.tip_sidebar_filter": "Use sidebar filtering",
+  "help.close_help": "Close help",
+  "help.hide_help": "Hide help",
+  "help.clear_search": "Clear",
+  "sidebar.filter_path": "Path filters",
+  "sidebar.all_vaults": "All vaults",
+  "webhook.trigger_rename": "Rename via API",
+  "webhook.trigger_dir_delete": "Directory deletion via API",
+  "webhook.trigger_dir_rename": "Directory rename via API",
+  "webhook.trigger_create": "Creation via API or palette",
+  "webhook.trigger_delete": "Deletion via API or editor",
+  "webhook.trigger_dir_create": "Directory creation via API",
+  "sidebar.tab_backups": "Backups"
 }