Adds a method in callstats in order to check if it's enabled.

modules/UI/Feedback.js

     init: function () {
         // CallStats is the way we send feedback, so we don't have to initialise
         // if callstats isn't enabled.
-        if (!config.callStatsID || !config.callStatsSecret)
+        if (!callStats.isEnabled())
             return;
 
         $("div.feedbackButton").css("display", "block");
      * @return true if the feedback functionality is enabled, false otherwise.
      */
     isEnabled: function() {
-        var isCallStatsEnabled = (config.callStatsID && config.callStatsSecret);
-
-        return isCallStatsEnabled;
+        return callStats.isEnabled();
     },
     /**
      * Opens the feedback window.

modules/statistics/CallStats.js

             pendingErrors.length = 0;
         }
     },
+    /**
+     * Returns true if the callstats integration is enabled, otherwise returns
+     * false.
+     *
+     * @returns true if the callstats integration is enabled, otherwise returns
+     * false.
+     */
+    isEnabled: function() {
+        return callStatsIntegrationEnabled;
+    },
     pcCallback: function (err, msg) {
         if (!callStats) {
             return;
         callStats.sendUserFeedback(
             this.confID, feedbackJSON);
     },
-
+    /**
+     * Reports an error to callstats.
+     *
+     * @param type the type of the error, which will be one of the wrtcFuncNames
+     * @param e the error
+     * @param pc the peerconnection
+     * @private
+     */
     _reportError: function (type, e, pc) {
         if (callStats) {
             callStats.reportError(pc, this.confID, type, e);