[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/inc/vars.inc.php

@@ -116,3 +116,6 @@ $OTP_LABEL = "mailcow UI";
 
 // Default "to" address in relay test tool
 $RELAY_TO = "null@hosted.mailcow.de";
+
+// How long to wait (in s) for cURL Docker requests
+$DOCKER_TIMEOUT = 60;