Add translation keys for new admin nav items in all languages

src/messages/nl.json

@@ -697,6 +697,7 @@
         "advertisements": "Advertenties",
         "writeableBoxes": "Beschrijfbare boxes",
         "photos": "Foto's",
+        "tickets": "Tickets",
         "usersAndAccess": "Gebruikers & toegang",
         "users": "Gebruikers",
         "bans": "Bans",
@@ -717,6 +718,15 @@
         "calendar": "Kalender",
         "radio": "Radio",
         "radioHistory": "Radio geschiedenis",
+        "radioBanners": "Banners",
+        "radioEmbed": "Embed",
+        "radioApiKeys": "API-sleutels",
+        "radioModeration": "Moderatie",
+        "radioSettings": "Instellingen",
+        "radioMonitoring": "Monitoring",
+        "radioPoints": "Punten",
+        "radioRanks": "Rangen",
+        "radioAutodj": "Auto DJ",
         "system": "Systeem",
         "commandocentrum": "Commandocentrum",
         "emulator": "Emulator",
@@ -730,6 +740,9 @@
         "theme": "Thema",
         "media": "Media",
         "favicon": "Favicon",
+        "sounds": "Geluiden",
+        "translations": "Vertalingen",
+        "import": "Importeren",
         "settings": "Instellingen",
         "backToSite": "Terug naar site",
         "hotelManagementPanel": "Hotelbeheerpaneel",