Restrict fields on template (#2659)

* Add script to display user mentions in Service Portal

This script retrieves and displays the top 5 records where the logged-in user is mentioned, providing links to those records.

* Delete Modern Development/Service Portal Widgets/My Mentioned Items directory

* Create script.js

* Delete Modern Development/Service Portal Widgets/My Mentioned Items directory

* Create script.js

* Delete Server-Side Components/Scheduled Jobs/Retire Rating 1 Articles directory

* Create script.js

* Update script.js

* Create README.md

* Update README.md

* Update script.js

Author: raghavs046

Client-Side Components/Client Scripts/Restrict Fields on Template/README.md

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+**Details**
+
+This is a on change client script on sys_template table. This script will restrict users to select defined fields while template creation.
+Type: OnChange
+Field: Template
+Table: sys_template
+
+**Use Case**
+
+There is an OOB functionality to restrict fields using "**save as template**" ACL, but it has below limitations:
+1. If the requirement is to restrcit more number of fields (example: 20), 20 ACLs will have to be created.
+2. The ACls will have instance wide effect, this script will just restrict on client side.

Client-Side Components/Client Scripts/Restrict Fields on Template/script.js

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+/*
+Type: onChnage
+Table: sys_template
+Field: Template
+*/
+function onChange(control, oldValue, newValue, isLoading, isTemplate) {
+    if (isLoading || newValue === '') {
+        return;
+    }
+    if (g_form.getValue('table') == 'incident') { // table on which sys_template is being created.
+        var fields = ['active', 'comments']; // array of fields to be restricted while template creation.
+        for (var i = 0; i < fields.length; i++) {
+            if (newValue.indexOf(fields[i]) > -1) {
+                alert("You Cannot Add " + fields[i]); // alert if user selects the restricted field.
+                var qry = newValue.split(fields[i]);
+                g_form.setValue('template', qry[0] + 'EQ');  // set the template value to previous values (oldValue does not work in this case).
+            }
+        }
+    }
+}