Merge pull request #743 from jitsi/handle-initial-videotype

Uses videoType from the video track for the initial value.

modules/UI/videolayout/RemoteVideo.js

     let isVideo = stream.isVideoTrack();
     isVideo ? this.videoStream = stream : this.audioStream = stream;
 
+    if (isVideo)
+        this.setVideoType(stream.videoType);
+
     // Add click handler.
     let onClickHandler = (event) => {
         let source = event.target || event.srcElement;