Do not allow different storage configurations to point to the same directory (#30169)

Replace #29171

templates/admin/dashboard.tmpl

@@ -6,7 +6,7 @@
 			</div>
 		{{end}}
 		<h4 class="ui top attached header">
-			{{ctx.Locale.Tr "admin.dashboard.operations"}}
+			{{ctx.Locale.Tr "admin.dashboard.maintenance_operations"}}
 		</h4>
 		<div class="ui attached table segment">
 			<form method="post" action="{{AppSubUrl}}/admin">