[Web] Add search fields to some select forms

[Web] Better container restart js, but still a wip
[Web] Allow to set a DOCKER_TIMEOUT in vars.inc.php, default is 60 (seconds)

data/web/css/mailcow.css

@@ -135,4 +135,7 @@ nav .glyphicon {
 }
 #top {
   padding-top: 70px;
+}
+.bootstrap-select.btn-group .no-results {
+  display: none;
 }