Add redesign feedback dialog + button in tag panel

src/components/views/dialogs/RedesignFeedbackDialog.js

@@ -0,0 +1,52 @@
+/*
+Copyright 2018 New Vector 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 existingIssuesUrl = "https://github.com/vector-im/riot-web/issues" +
+        "?q=is%3Aopen+is%3Aissue+label%3Aredesign+sort%3Areactions-%2B1-desc";
+    const newIssueUrl = "https://github.com/vector-im/riot-web/issues/new" +
+        "?assignees=&labels=redesign&template=redesign_issue.md&title=";
+
+    const description1 =
+        _t("Thanks for testing the Riot Redesign. " +
+            "If you run into any bugs or visual issues, " +
+            "please let us know on GitHub.");
+    const description2 = _t("To help avoid duplicate issues, " +
+        "please <existingIssuesLink>view existing issues</existingIssuesLink> " +
+        "first (and add a +1) or <newIssueLink>create a new issue</newIssueLink> " +
+        "if you can't find it.", {},
+        {
+            existingIssuesLink: (sub) => {
+                return <a target="_blank" rel="noreferrer noopener" href={existingIssuesUrl}>{ sub }</a>;
+            },
+            newIssueLink: (sub) => {
+                return <a target="_blank" rel="noreferrer noopener" href={newIssueUrl}>{ sub }</a>;
+            },
+        });
+
+    return (<QuestionDialog
+        hasCancelButton={false}
+        title={_t("Report bugs & give feedback")}
+        description={<div><p>{description1}</p><p>{description2}</p></div>}
+        button={_t("Go back")}
+        onFinished={props.onFinished}
+    />);
+};