Updated reference to choices

Because I have attempted to fix the WebPack issue with choices, I need to change how it is referenced

src/scripts/reducers/index.js

@@ -1,7 +1,7 @@
 import { combineReducers } from 'redux';
 import items from './items';
 import groups from './groups';
-import choices from './choices';
+import { choices } from './choices';
 import general from './general';
 import { cloneObject } from '../lib/utils';