settings: Extract Onboarding section in realm settings.

The section had gotten too tall, at least when the welcome bot message
was enabled.

help/configure-a-custom-welcome-message.md

@@ -24,8 +24,8 @@ administrators.
 
 {settings_tab|organization-settings}
 
-1. Under **Automated messages and emails**, enable **Add a custom Welcome Bot
-   message for new users**.
+1. Under **Onboarding**, enable **Add a custom Welcome Bot message for
+   new users**.
 
 1. Under **Message text**, enter a custom welcome message using Zulip's standard
    [Markdown formatting](/help/format-your-message-using-markdown).

help/disable-welcome-emails.md

@@ -15,7 +15,7 @@ email notifying them about their new Zulip account and how to log in.
 
 {settings_tab|organization-settings}
 
-1. Under **Automated messages and emails**, toggle
+1. Under **Onboarding**, toggle
    **Send emails introducing Zulip to new users**.
 
 {end_tabs}

web/src/settings_org.ts

@@ -364,7 +364,7 @@ function disable_create_user_groups_if_on_limited_plan(): void {
 }
 
 export function maybe_store_unsaved_welcome_message_custom_text(): void {
-    if ($("#org-notifications").find(".save-button[data-status='unsaved']").length === 0) {
+    if ($("#org-onboarding").find(".save-button[data-status='unsaved']").length === 0) {
         return;
     }
 

web/templates/settings/organization_settings_admin.hbs

@@ -34,11 +34,6 @@
                   value_type="number"
                   custom_classes="decorated-stream-name-dropdown-widget"}}
 
-                {{> settings_checkbox
-                  setting_name="realm_send_welcome_emails"
-                  prefix="id_"
-                  is_checked=realm_send_welcome_emails
-                  label=admin_settings_label.realm_send_welcome_emails}}
                 {{#if settings_send_digest_emails }}
                 {{> settings_checkbox
                   setting_name="realm_digest_emails_enabled"
@@ -62,6 +57,15 @@
                     </select>
                 </div>
 
+            </div>
+        </div>
+
+        <div id="org-onboarding" class="settings-subsection-parent">
+            <div class="subsection-header">
+                <h3>{{t "Onboarding" }}</h3>
+                {{> settings_save_discard_widget section_name="onboarding" }}
+            </div>
+            <div class="inline-block organization-settings-parent">
                 {{> settings_checkbox
                   setting_name="realm_enable_welcome_message_custom_text"
                   prefix="id_"
@@ -80,6 +84,11 @@
                     </div>
                 </div>
 
+                {{> settings_checkbox
+                  setting_name="realm_send_welcome_emails"
+                  prefix="id_"
+                  is_checked=realm_send_welcome_emails
+                  label=admin_settings_label.realm_send_welcome_emails}}
             </div>
         </div>