Moves method for selecting thumbnail's video element from videolayout to SmallVideo. Fixes issue with muted audio in IE after switching between thumbnails.
Re-uses SSRC of the first video stream created for any streams created in future. Does video mute and switching to the screen stream without 'source-add'/'source-remove' signaling. Moves video type signaling from Jingle to MUC presence.
Fixes issue with missing avatar for Jigasi user. Fixes issue with avatar not being displayed when user has no video. Removed duplicated logic for checking video muted status(removed from LargeVideo which exists in SmallVideo).