App image filename

webadmin/installappconfirm.php

@@ -61,7 +61,7 @@ if (isset($_POST['installconfirmsubmit'])) {
                         exec('cp index.html index_app_installing.html');
                         exec('cp app_installing_progress.html index.html');
                     }
-                    exec('cp images/'.$app_name.'.png images/installing_app.png');
+                    exec('cp images/app_'.$app_name.'.png images/installing_app.png');
                     $pending_installs = fopen("pending_installs.txt", "a") or die("Unable to append to installs file");
                     fwrite($pending_installs, "install_".$app_name.",".$install_domain.",".$freedns_code."\n");
                     fclose($pending_installs);