feat: refactor agreement modal and create folders to classify components (#1686)

* refactor: refactor agreement modal and create folders to classify components

* fix: i18

* fix: i18

* fix: i18n

web/src/common/CustomGithubCorner.js

@@ -0,0 +1,38 @@
+// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+//
+// 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 * as Conf from "../Conf";
+import GithubCorner from "react-github-corner";
+
+class CustomGithubCorner extends React.Component {
+  constructor(props) {
+    super(props);
+    this.state = {
+      classes: props,
+    };
+  }
+
+  render() {
+    if (!Conf.ShowGithubCorner) {
+      return null;
+    }
+
+    return (
+      <GithubCorner href={Conf.GithubRepo} size={60} />
+    );
+  }
+}
+
+export default CustomGithubCorner;