Moving javascript driver back to platform (#3613)

webapp/components/file_attachment.jsx

@@ -4,7 +4,7 @@
 import $ from 'jquery';
 import ReactDOM from 'react-dom';
 import * as utils from 'utils/utils.jsx';
-import Client from 'utils/web_client.jsx';
+import Client from 'client/web_client.jsx';
 import Constants from 'utils/constants.jsx';
 
 import {intlShape, injectIntl, defineMessages} from 'react-intl';