fixed some bugs (multiplay=false, load javascript and sound when needed, fixed all...

fixed some bugs (multiplay=false, load javascript and sound when needed, fixed all cases concerning superuser and authentication)

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modified:
  telemeta/htdocs/js/divmarker.js
  telemeta/htdocs/js/playerLoader.js
  telemeta/htdocs/timeside/js/markermap.js
  telemeta/htdocs/timeside/js/player.js
  telemeta/htdocs/timeside/js/timeside.js
  telemeta/templates/telemeta_default/mediaitem_detail.html
unknown:
  telemeta/htdocs/timeside/markermap.js
  telemeta/htdocs/timeside/player.js
  telemeta/htdocs/timeside/ruler.js
  telemeta/htdocs/timeside/rulermarker.js
  telemeta/htdocs/timeside/timeside.js