Add Pending Payment tab and rebrand to TeleShop Admin

- Added new 'Pending Payment' tab to show orders awaiting payment (4 orders)
- Rebranded admin panel from 'LittleShop Admin' to 'TeleShop Admin'
- Updated login page, layout, and dashboard with new branding
- Fixed visibility issue where PendingPayment orders had no tab
- All 13 orders are now visible across appropriate tabs

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

LittleShop/Areas/Admin/Views/Account/Login.cshtml

@@ -24,7 +24,7 @@
             <div class="col-md-6 col-lg-4">
                 <div class="card mt-5">
                     <div class="card-header text-center">
-                        <h4><i class="fas fa-store"></i> LittleShop Admin</h4>
+                        <h4><i class="fas fa-store"></i> TeleShop Admin</h4>
                     </div>
                     <div class="card-body">
                         <form method="post" action="/Admin/Account/Login">