delete sync data when LL is toggled, show message when enabling

src/components/views/dialogs/LazyLoadingResyncDialog.js

@@ -0,0 +1,32 @@
+/*
+Copyright 2015, 2016 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import QuestionDialog from './QuestionDialog';
+import { _t } from '../../../languageHandler';
+
+export default (props) => {
+    const description =
+        _t("Lazy loading has been enabled for your account. Performance!! We'll need to resync your account.");
+
+    return (<QuestionDialog
+        hasCancelButton={false}
+        title={_t("Need to resync your account")}
+        description={<div>{description}</div>}
+        button={_t("OK")}
+        onFinished={props.onFinished}
+    />);
+};