rc/rc_pubsub bug in feedback

[dcconner]

Gives error logging synthesis feedback. Fix just add + before feedback calc:

@@ -234,7 +234,7 @@ RC.PubSub = new (function() {
        }
 
        var synthesis_action_feedback_callback = function(feedback, root, feedback_cb) {
-               console.log('Synthesis status: ' + feedback.status + ' (' (feedback.progress * 100) + '%)');
+               console.log('Synthesis status: ' + feedback.status + ' (' + (feedback.progress * 100) + '%)');

[pschillinger]

Thank you for spotting this, looks like a typo. Could you add a PR for this or directly commit it to develop in case you have writing rights?