restore composer.json, add mysqli extension

public/vendor/dashboard/app-assets/data/fullcalendar/php/get-timezones.php

@@ -0,0 +1,9 @@
+<?php
+
+//--------------------------------------------------------------------------------------------------
+// This script outputs a JSON array of all timezones (like "America/Chicago") that PHP supports.
+//
+// Requires PHP 5.2.0 or higher.
+//--------------------------------------------------------------------------------------------------
+
+echo json_encode(DateTimeZone::listIdentifiers());