Log when remote participant published audio/video

resources/views/app/video/call-minimal.blade.php

@@ -532,7 +532,7 @@
                             user.audioTrack.play();
                         }
 
-                        // TODO log
+                        this.log('got ' + mediaType + ' stream from user: ' + user.uid);
                     }
                     catch (e) {
                         this.log('could not subscribe to ' + mediaType + ' from ' + user.uid + ' - ' + e.toString(), 'error');