forked from github/cinny
* add mutation observer hok * add hook to read speaking member by observing iframe content * display speaking member name in call status bar and improve layout * fix shrining * add joined call control bar * remove chat toggle from room header * change member speaking icon to mic * fix joined call control appear in other * show spinner on end call button * hide call statusbar for mobile view when room is selected * make call statusbar more mobile friendly * fix call status bar item align