Disable copy paste on portal pages (#2479)

* 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

* Create README.md

Author: raghavs046

Client-Side Components/UI Scripts/Disable Copy Paste For Portal/README.md

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+**Steps to Activate**
+1. Open the portals you want to disable copy/paste operation in "sp_portal" table.
+2. Open the theme attached to the portal.
+In the theme under "JS Includes" relatd list, create new JS include and select the UI script you created. Go to your portal and try to copy/paste in any catalog item field or any text field on portal.The operation will be prevented with the alert message.
+
+**Use Case**
+1. Many high security organizations like banks do not want the users to copy paste account number or passwords to ensure safety.
+2. Many input form want the users to re-enter the password or username without copying from other fields.
+
+This UI script is applied through portal theme , so it will be specific to portals using that theme. It will not have instance wide affect.

Client-Side Components/UI Scripts/Disable Copy Paste For Portal/script.js

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+/*
+Disable Copy Paste on Portal Pages.
+UI Type : Service Portal/Mobile.
+*/
+document.addEventListener('copy', function(e) { //event listner for copy.
+    alert("Copy Operation is prevented on this page."); // alert for copy
+    e.preventDefault(); // prevent copy
+});
+
+document.addEventListener('paste', function(e) { //event listner for paste.
+    alert("Paste Operation is prevented on this page."); //alert for paste
+    e.preventDefault(); // prevent paste
+});