PLT-5900 Removed automatic configuration of SiteURL (#5952)

* Revert "PLT-5765 Passed SiteURL to SendNotifications (#5705)"

This reverts commit a8e68bd890.

* Removed automatic configuration of SiteURL

* Reverted unintentional config changes

* Updated help text

* Added link to docs in Site URL warning

* Fixed merge conflict

webapp/components/admin_console/admin_settings.jsx

@@ -69,6 +69,10 @@ export default class AdminSettings extends React.Component {
                 if (callback) {
                     callback();
                 }
+
+                if (this.handleSaved) {
+                    this.handleSaved(config);
+                }
             },
             (err) => {
                 this.setState({
@@ -79,6 +83,10 @@ export default class AdminSettings extends React.Component {
                 if (callback) {
                     callback();
                 }
+
+                if (this.handleSaved) {
+                    this.handleSaved(config);
+                }
             }
         );
     }