Fix essential security bug

index.php

@@ -190,10 +190,10 @@ if ($migrated) {
                 echo "<h2 class=\"subheading\">Admin</h2>";
             }
 
-//	        if ($uri[0] == "admin" && !$user['is_admin']) {
-//		        http_response_code(401);
-//		        die("<img src='https://http.cat/401.jpg' alt='A cat standing in front of a door with a No Cats Allowed sign on it.' />");
-//	        }
+	        if ($uri[0] == "admin" && !$user['is_admin']) {
+		        http_response_code(401);
+		        die("<img src='https://http.cat/401.jpg' alt='A cat standing in front of a door with a No Cats Allowed sign on it.' />");
+	        }
 
             if ($uri[0] == "docs") {
                 $include = "docs.php";