Implement RBAC migration and role management enhancements

- Added AJAX functionality to fetch role permissions for copying.
- Introduced system role management with permission checks for updates.
- Implemented role deletion with confirmation modal and backend handling.
- Enhanced user role assignment migration scripts to transition from legacy profiles to RBAC.
- Created SQL migration scripts for user roles and permissions mapping.
- Updated user interface to support new role management features including copy permissions and system role indicators.

softwaretool.php

@@ -197,14 +197,10 @@ $view .= '
     </div>';
 
 
-if (isset($_GET['equipmentID'])){$returnpage = 'equipment&equipmentID='.$_GET['equipmentID']; } else {$returnpage = 'dashboard';}
-
-
 //SHOW BACK BUTTON ONLY FOR PORTAL USERS
 if (isAllowed($page ,$_SESSION['authorization']['permissions'],$_SESSION['authorization']['permission'],'R') != 0){
   $view .= '
       <div class="title-actions">
-        <a href="index.php?page='.$returnpage.'" class="btn alt mar-right-2"><i class="fa-solid fa-arrow-left"></i></a>
         <button class="btn" onclick="showInstructions()" style="">
             <i class="fa-solid fa-circle-question"></i>
         </button>