Changed version number to 3.1b1 for first beta release.

Till Brehm

2016-04-22 037b69e2230b731cc8c2a4846cd8f7f233042338

 server/lib/classes/monitor_tools.inc.php

@@ -62,6 +62,10 @@
            $mainver = array_filter($mainver);
            $mainver = current($mainver).'.'.next($mainver);
            switch ($mainver){
            case "16.04":
               $relname = "(Xenial Xerus)";
               $distid = 'ubuntu1604';
               break;
            case "15.10":
               $relname = "(Wily Werewolf)";
               break;