do not confirm answer 0 on startup

client/index.js

@@ -379,6 +379,9 @@ const actions = {
   stopPreview: () => ({ previewSlideId: -1 }),
   setAnswer: (value) => (state, actions) => {
     if (state.kind === 'OFFLINE') {
+      if (!state.started) {
+        return { answer: value }
+      }
       let shuffledId = state.shuffledSlidesIndex[state.currentFreeSlideId];
       let offlineConfirmedState = {
         ...state.offlineConfirmedState,