auto acp scripted

meet.jit.si_fqdn_conf.js

 
-var subdomain = "";
+var subdomain = `<!--# echo var="subdomain" default="" -->`
 if (subdomain) {
     subdomain = subdomain.substr(0,subdomain.length-1).split('.').join('_').toLowerCase() + '.';
 }
     hosts: {
         domain: 'meet.jit.si',
 
-        muc: 'conference.'+subdomain+'meet.jit.si', // FIXME: use XEP-0030
+        muc: 'conference.'+""+'meet.jit.si', // FIXME: use XEP-0030
+        // muc: 'conference.'+subdomain+'meet.jit.si', // FIXME: use XEP-0030
         focus: 'focus.meet.jit.si',
     },
     disableSimulcast: false,