PLT-2257 Reorganized System Console (#3003)

* Reorganized system console

* Fixed the names of some components

* Fixed timestamp for BrandImageSetting

* Fixed merge issues

* Updated push notification settings to match master branch

* Removed top level setting pages and moved enable Gitlab/LDAP settings onto their respective pages

* Re-added restrictDirectMessage setting to system console

* Re-added email connection test and fixed some margins

* Fixed ESLint errors

* Renamed Authentication > Onboarding to Authentication > Email in the system console

* Renamed Customization > Whitelabeling to Customization > Custom Branding in System Console

* Re-added EnableOpenServer to system console

webapp/components/admin_console/email_connection_test.jsx

@@ -0,0 +1,118 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+import React from 'react';
+
+import Client from 'utils/web_client.jsx';
+import * as Utils from 'utils/utils.jsx';
+
+import {FormattedMessage} from 'react-intl';
+
+export default class EmailConnectionTestButton extends React.Component {
+    static get propTypes() {
+        return {
+            config: React.PropTypes.object.isRequired,
+            disabled: React.PropTypes.bool.isRequired
+        };
+    }
+
+    constructor(props) {
+        super(props);
+
+        this.handleTestConnection = this.handleTestConnection.bind(this);
+
+        this.state = {
+            testing: false,
+            success: false,
+            fail: null
+        };
+    }
+
+    handleTestConnection(e) {
+        e.preventDefault();
+
+        this.setState({
+            testing: true,
+            success: false,
+            fail: null
+        });
+
+        Client.testEmail(
+            this.props.config,
+            () => {
+                this.setState({
+                    testing: false,
+                    success: true
+                });
+            },
+            (err) => {
+                this.setState({
+                    testing: false,
+                    fail: err.message + ' - ' + err.detailed_error
+                });
+            }
+        );
+    }
+
+    render() {
+        let testMessage = null;
+        if (this.state.success) {
+            testMessage = (
+                <div className='alert alert-success'>
+                    <i className='fa fa-check'></i>
+                    <FormattedMessage
+                        id='admin.email.emailSuccess'
+                        defaultMessage='No errors were reported while sending an email.  Please check your inbox to make sure.'
+                    />
+                </div>
+            );
+        } else if (this.state.fail) {
+            testMessage = (
+                <div className='alert alert-warning'>
+                    <i className='fa fa-warning'></i>
+                    <FormattedMessage
+                        id='admin.email.emailFail'
+                        defaultMessage='Connection unsuccessful: {error}'
+                        values={{
+                            error: this.state.fail
+                        }}
+                    />
+                </div>
+            );
+        }
+
+        let contents = null;
+        if (this.state.testing) {
+            contents = (
+                <span>
+                    <span className='glyphicon glyphicon-refresh glyphicon-refresh-animate'/>
+                    {Utils.localizeMessage('admin.email.testing', 'Testing...')}
+                </span>
+            );
+        } else {
+            contents = (
+                <FormattedMessage
+                    id='admin.email.connectionSecurityTest'
+                    defaultMessage='Test Connection'
+                />
+            );
+        }
+
+        return (
+            <div className='form-group email-connection-test'>
+                <div className='col-sm-offset-4 col-sm-8'>
+                    <div className='help-text'>
+                        <button
+                            className='btn btn-default'
+                            onClick={this.handleTestConnection}
+                            disabled={this.props.disabled}
+                        >
+                            {contents}
+                        </button>
+                        {testMessage}
+                    </div>
+                </div>
+            </div>
+        );
+    }
+}