Add translation for uploading 3D images

backend/hu/resource.json

@@ -52,6 +52,8 @@
         "delete_question": "Val\u00f3ban t\u00f6r\u00f6lni k\u00edv\u00e1nja az \u00e1br\u00e1zol\u00e1st?",
         "delete_no": "Nem, m\u00e9gsem (vissza)",
         "delete_yes": "Igen, t\u00f6rl\u00e9s",
-        "preview": "El\u0151n\u00e9zet"
+        "preview": "El\u0151n\u00e9zet",
+        "3d_object": "3D Object",
+        "upload_3d_object": "Upload 3D object"
     }
 }