Rename test-only MessageParents to ConversationContext

js/react/util/index.ts

@@ -8,7 +8,7 @@ import ReactDOM from 'react-dom';
 // Helper components used in the styleguide, exposed at 'util' in the global scope via the
 //   context option in react-styleguidist.
 
-export { MessageParents } from './MessageParents';
+export { ConversationContext } from './ConversationContext';
 export { BackboneWrapper } from './BackboneWrapper';
 
 // Here we can make things inside Webpack available to Backbone views like preload.js.