fix(lobby) display the entire message in the reject notification

lang/main.json

@@ -556,6 +556,7 @@
         "errorMissingPassword": "Please enter the meeting password",
         "invalidPassword": "Invalid password",
         "joinRejectedMessage": "Your join request was rejected by a moderator.",
+        "joinRejectedTitle": "Join request rejected.",
         "joinTitle": "Join Meeting",
         "joinWithPasswordMessage": "Trying to join with password, please wait...",
         "joiningMessage": "You'll join the meeting as soon as someone accepts your request",

react/features/lobby/middleware.js

@@ -307,7 +307,8 @@ function _conferenceFailed({ dispatch, getState }, next, action) {
             showNotification({
                 appearance: NOTIFICATION_TYPE.ERROR,
                 hideErrorSupportLink: true,
-                titleKey: 'lobby.joinRejectedMessage'
+                titleKey: 'lobby.joinRejectedTitle',
+                descriptionKey: 'lobby.joinRejectedMessage'
             }, NOTIFICATION_TIMEOUT_TYPE.LONG)
         );
     }