Add indicator in the poster list for no results

src/public/js/components/list/posters.js

@@ -66,6 +66,11 @@ export default class ListPosters extends React.Component {
           controlModel={this.props.controlModel}
           controlPlaceHolder={this.props.controlPlaceHolder}
         />
+        {elmts.length === 0 &&
+            <div className="jumbotron">
+              <h2>No result</h2>
+            </div>
+        }
         <Infinite
           elementHeight={this.state.fakeElementHeight}
           infiniteLoadBeginEdgeOffset={200}