[Web] Minify css and js via PHP

[Web] Use PT Sans
[Web] Update some libs

data/web/mailbox.php

@@ -336,8 +336,7 @@ echo "var is_dual = " . $is_dual . ";\n";
 echo "var pagination_size = '". $PAGINATION_SIZE . "';\n";
 ?>
 </script>
-<script src="/js/footable.min.js"></script>
-<script src="/js/mailbox.js"></script>
+<script src="/js/site/mailbox.js"></script>
 <?php
 require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/footer.inc.php';
 }