Move gallery to component.

src/localize/languages/en.json

@@ -84,6 +84,7 @@
     "could_not_resolve": "Could not resolve media URL",
     "no_live_camera": "No live camera",
     "invalid_configuration": "Invalid configuration",
-    "missing_webrtc": "WebRTC component not found"
+    "missing_webrtc": "WebRTC component not found",
+    "internal": "Internal error"
   }
 }