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_authentication_settings.jsx

@@ -0,0 +1,109 @@
+// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+import React from 'react';
+
+import AdminSettings from './admin_settings.jsx';
+import BooleanSetting from './boolean_setting.jsx';
+import {FormattedMessage} from 'react-intl';
+import SettingsGroup from './settings_group.jsx';
+
+export default class EmailAuthenticationSettings extends AdminSettings {
+    constructor(props) {
+        super(props);
+
+        this.getConfigFromState = this.getConfigFromState.bind(this);
+
+        this.renderSettings = this.renderSettings.bind(this);
+
+        this.state = Object.assign(this.state, {
+            enableSignUpWithEmail: props.config.EmailSettings.EnableSignUpWithEmail,
+            enableSignInWithEmail: props.config.EmailSettings.EnableSignInWithEmail,
+            enableSignInWithUsername: props.config.EmailSettings.EnableSignInWithUsername
+        });
+    }
+
+    getConfigFromState(config) {
+        config.EmailSettings.EnableSignUpWithEmail = this.state.enableSignUpWithEmail;
+        config.EmailSettings.EnableSignInWithEmail = this.state.enableSignInWithEmail;
+        config.EmailSettings.EnableSignInWithUsername = this.state.enableSignInWithUsername;
+
+        return config;
+    }
+
+    renderTitle() {
+        return (
+            <h3>
+                <FormattedMessage
+                    id='admin.authentication.title'
+                    defaultMessage='Authentication Settings'
+                />
+            </h3>
+        );
+    }
+
+    renderSettings() {
+        return (
+            <SettingsGroup
+                header={
+                    <FormattedMessage
+                        id='admin.authentication.email'
+                        defaultMessage='Email'
+                    />
+                }
+            >
+                <BooleanSetting
+                    id='enableSignUpWithEmail'
+                    label={
+                        <FormattedMessage
+                            id='admin.email.allowSignupTitle'
+                            defaultMessage='Allow Sign Up With Email: '
+                        />
+                    }
+                    helpText={
+                        <FormattedMessage
+                            id='admin.email.allowSignupDescription'
+                            defaultMessage='When true, Mattermost allows team creation and account signup using email and password.  This value should be false only when you want to limit signup to a single-sign-on service like OAuth or LDAP.'
+                        />
+                    }
+                    value={this.state.enableSignUpWithEmail}
+                    onChange={this.handleChange}
+                />
+                <BooleanSetting
+                    id='enableSignInWithEmail'
+                    label={
+                        <FormattedMessage
+                            id='admin.email.allowEmailSignInTitle'
+                            defaultMessage='Allow Sign In With Email: '
+                        />
+                    }
+                    helpText={
+                        <FormattedMessage
+                            id='admin.email.allowEmailSignInDescription'
+                            defaultMessage='When true, Mattermost allows users to sign in using their email and password.'
+                        />
+                    }
+                    value={this.state.enableSignInWithEmail}
+                    onChange={this.handleChange}
+                />
+                <BooleanSetting
+                    id='enableSignInWithUsername'
+                    label={
+                        <FormattedMessage
+                            id='admin.email.allowUsernameSignInTitle'
+                            defaultMessage='Allow Sign In With Username: '
+                        />
+                    }
+                    helpText={
+                        <FormattedMessage
+                            id='admin.email.allowUsernameSignInDescription'
+                            defaultMessage='When true, Mattermost allows users to sign in using their username and password.  This setting is typically only used when email verification is disabled.'
+                        />
+                    }
+                    value={this.state.enableSignInWithUsername}
+                    onChange={this.handleChange}
+                />
+            </SettingsGroup>
+        );
+    }
+}