Handles MUC destroyed event.

modules/UI/UI.js

         messageHandler.openMessageDialog("dialog.sessTerminated", "Session Terminated",
             "dialog.kickMessage", "Ouch! You have been kicked out of the meet!");
     });
+    APP.xmpp.addListener(XMPPEvents.MUC_DESTROYED, function (reason) {
+        //FIXME: use Session Terminated from translation, but
+        // 'reason' text comes from XMPP packet and is not translated
+        messageHandler.openDialog(
+            "Session Terminated", reason, true, {},
+            function (event, value, message, formVals)
+            {
+                return false;
+            }
+        );
+    });
     APP.xmpp.addListener(XMPPEvents.BRIDGE_DOWN, function () {
         messageHandler.showError("dialog.error","Error",
             "dialog.bridgeUnavailable",

modules/xmpp/strophe.emuc.js

         },
         onPresenceUnavailable: function (pres) {
             var from = pres.getAttribute('from');
+            // room destroyed ?
+            if ($(pres).find('>x[xmlns="http://jabber.org/protocol/muc#user"]' +
+                             '>destroy').length) {
+                var reason;
+                var reasonSelect = $(pres).find(
+                    '>x[xmlns="http://jabber.org/protocol/muc#user"]' +
+                    '>destroy>reason');
+                if (reasonSelect.length) {
+                    reason = reasonSelect.text();
+                }
+                XMPP.disposeConference(false);
+                eventEmitter.emit(XMPPEvents.MUC_DESTROYED, reason);
+                return true;
+            }
             // Status code 110 indicates that this notification is "self-presence".
             if (!$(pres).find('>x[xmlns="http://jabber.org/protocol/muc#user"]>status[code="110"]').length) {
                 delete this.members[from];

service/xmpp/XMPPEvents.js

     MUC_ENTER: "xmpp.muc_enter",
     MUC_ROLE_CHANGED: "xmpp.muc_role_changed",
     MUC_LEFT: "xmpp.muc_left",
+    MUC_DESTROYED: "xmpp.muc_destroyed",
     DISPLAY_NAME_CHANGED: "xmpp.display_name_changed",
     REMOTE_STATS: "xmpp.remote_stats",
     LOCALROLE_CHANGED: "xmpp.localrole_changed",