Add config.hosts.domain to the callstats id

JitsiConference.js

     this.statistics = new Statistics(this.xmpp, {
         callStatsID: this.options.config.callStatsID,
         callStatsSecret: this.options.config.callStatsSecret,
+        callStatsConfIDNamespace: this.options.config.callStatsConfIDNamespace || this.options.config.hosts.domain,
         disableThirdPartyRequests: this.options.config.disableThirdPartyRequests
     });
     setupListeners(this);

modules/statistics/CallStats.js

 
         this.userID = Settings.getCallStatsUserName();
 
-        this.confID = this.session.room.roomjid;
+        this.confID = options.callStatsConfIDNamespace + '/' + this.session.getName();
 
         //userID is generated or given by the origin server
         callStats.initialize(options.callStatsID,

modules/xmpp/JingleSessionPC.js

     return this.state == 'active';
 };
 
+JingleSessionPC.prototype.getName = function() {
+    return this.room.roomJid;
+};
+
 JingleSessionPC.prototype.sendIceCandidate = function (candidate) {
     var self = this;
     if (candidate && !this.lasticecandidate) {