New index.php with Redirect

Thanks to jokob-sk

https://github.com/jokob-sk/Pi.Alert/commit/1aec3a84a06cdb67dc82a2858f1958331ec91333#diff-e6b69b9a907090f40a5b1266aea0d5d68ee8432ff3c3e76c211dfbc0a02bc5f2

front/index.php

@@ -0,0 +1,5 @@
+<?php 
+  header('Location: /pialert/devices.php', TRUE, 302);
+// or die();
+  exit();
+?>